On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Rock / mineral aggregate · Natural identity; treatment status unknown
Silicified Jade
A natural jade basic name in GB/T 16552-2017 Table A.2, covering Silicified Asbestos, Petrified Wood and silicified coral; the base material varies from sample to sample. This page compares how the major standards and institutions name it, what must be disclosed when selling it, whether it can be worn every day, how it is treated and identified, and which source each conclusion comes from.
Price, rarity and origin are outside the scope of this wiki.
What this page can answer
This page covers
- How Silicified Jade forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Silicified JadeHow far lab testing can go
- Treatments and enhancements of Silicified Jade2 registered treatments: status, stability, how common they are and identification leads
- Caring for and wearing Silicified JadeDurability indicators and wearing advice
- Hardness, density and refractive index of Silicified JadeEach value with its source and check date
- Silicified Jade in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name; and: Has any of GIA, FTC, CIBJO or Gem-A put a name for it on record here?
- Name origin and history of Silicified JadeWhere the name comes from
- Listing and disclosing Silicified JadeThe listing name to use; what must be disclosed before sale
- Standard clauses that define Silicified JadeWhich clause defines it, each cross-checked
What we cannot conclude
- Whether one particular bead is natural, treated or synthetic — only a laboratory report can settle that.
- Geographic origin, unless an origin report accompanies the item.
- Price, rarity or investment value: this wiki covers naming and disclosure only.
Material research: formation, causes and history
What authoritative sources say about how this material forms, what causes its colour and optical effects, where its name comes from and how people have used it. Each statement carries an evidence grade and its sources; it describes the material in general, not any specific piece.
How it forms
Silicified ornamental material is a jade/ornamental material in which the substrate is unfixed and silica fills or replaces it, the siliceous part being mainly quartz and cryptocrystalline chalcedony. Silica-rich fluids enter the host rock or cavities through microfissures and infiltration canals, precipitating silica; the silica precipitates as fibrous microcrystalline chalcedony, forming aggregates of varied grain size that commonly show banding or patches. Because the substrate differs, silicification products range from silicified wood to silicified coral or silicified asbestos (tiger's-eye) types, yet the siliceous part shares the same origin.
Scope: Applies to the genetic description of the siliceous (quartz/chalcedony) portion of silicified jade; the matrix varies from sample to sample and must be identified individually.
Sources G&G Winter 2015 · G&G Fall 2013
Where it forms
Low-temperature settings where silica-rich fluids enter host rock or cavities via microfissures and infiltration canals
Sources G&G Fall 2013
Silica precipitation environments in voids, fissures, and pores of the host material
Sources G&G Fall 2013
How it forms, step by step
Silica-rich fluids enter the host rock or cavities along microfissures and infiltration canals.
Silica precipitates in the voids, forming fibrous microcrystalline chalcedony.
Silica accumulates in layers, forming aggregates of varied grain size that may show banding or patches.
Depending on the substrate, the silicified product appears as silicified wood, silicified coral, or silicified asbestos (tiger's-eye) type material.
Link to appearance
The appearance of silicified jade depends on silica grain size and substrate: fibrous microcrystalline chalcedony is semitranslucent with a waxy luster; where the substrate's original texture is preserved, silky luster or banded/net patterns appear, while chromophores and inclusions give yellow, red, or green hues.
Sources G&G Winter 2015
Timescale
The cited sources give no absolute geological timescale for the silicification of this material.
Sources G&G Winter 2015 · Handbook of Mineralogy · G&G Fall 2013
Related base materials
- Quartz-dominant jade (quartz-family category): Silicified jade is a quartz-family siliceous material; its matrix (parent) depends on the actual material
- Quartz / chalcedony: After silicification, the main component is cryptocrystalline quartz (chalcedony)
Supporting findings
Silica-rich fluids entering rock through microfissures and infiltration canals and precipitating silica is the silica-supply pathway of silicification.
Evidence grade AScope: Describes the silica supply and precipitation pathway; not limited to one substrate type.
Precipitation of cryptocrystalline silica can form aggregates of varied grain size showing banding; the aggregate structure controls its appearance.
Evidence grade AScope: Describes the structure-appearance relation of cryptocrystalline silica aggregates.
Sources G&G Winter 2015
The precipitation environment of the silica is a low-temperature fluid setting within rock voids and fissures.
Evidence grade AScope: Describes the host environment; does not quantify P-T conditions.
Where the name comes from
The etymology given here belongs to the parent mineral quartz: the name quartz is of obscure origin, first applied in the Middle Ages to gangue in Saxony, Germany. This belongs to the parent mineral quartz / chalcedony, not to the trade name “silicified jade”; the source gives no etymology for that name.
Evidence grade BScope: The etymology belongs to the parent mineral and does not establish the composition, locality, naturalness, or treatment of the material denoted by the trade name.
Sources Handbook of Mineralogy
Other research findings
The siliceous part of silicified jade is mainly quartz and cryptocrystalline chalcedony; Raman analysis can confirm the mineral phase is quartz.
Evidence grade AScope: Applies to the siliceous part; substrate minerals require separate identification.
Sources G&G Winter 2015 · Handbook of Mineralogy
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- 'Silicified jade' is an industry term with an unfixed substrate, not a single mineral species; this record covers the genesis of its siliceous (quartz/chalcedony) part, while the substrate's origin must be determined per sample.
- The full text of GB/T 16552-2017 and GB/T 34098-2017 is not freely obtainable, so whether this is a regulated name or any clause wording could not be verified; no specific clauses are cited.
- The cited sources give no absolute geological timescale for the silicification process.
Methodology
- Origin determination and its limits
- Quality grading and value factors
- How gemmology became a technical discipline
Evidence grades
- A
- Standards bodies, government geological surveys, peer-reviewed research and museum records
- B
- Institutional educational material
- C
- Specialist databases or cautious readings
A statement is never graded above its strongest source.
This section is LumaLark's own factual restatement of public authoritative sources, credited item by item; it contains no verbatim excerpts, images or third-party logos.
DecideListing name, disclosure, care and treatments
- Suggested listing name
- Silicified material (state the original substrate)
GB/T 16552—2017 Table A.2 “Silicified Jade(Silicified Asbestos/ Silicified Wood/ Silicified Coral)” · CIBJO Gemmological Laboratories Book 2024 7.1.4
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Dyed, Filled / Fracture-filled
Related:Disclosure and cautions
This page cannot answer
Natural? · Origin · Price
A lab report settles these; this wiki covers naming and disclosure.
Related:What this page can answer
Answer at a glance
"Silicified Jade" is a market name rather than a mineral species name; before using it, verify: Industry-wide term that does not denote a single species.
Evidence
- GB/T · Table A.2, row 硅化玉(木变石/硅化木/硅化珊瑚) (Silicified Jade)
What this means for you
Before buying, check the recommended listing name "Silicified material (state the original substrate)" and any disclosed treatments on this page, and ask the seller for a grading report if in doubt.
Known uncertainty
- This entry's exact material identity is not fully settled.
- See “Disclosure and cautions” above
- Last reviewed
- 2026-09-01
Trade-name ruling
- Industry-wide term that does not denote a single species.
- Suggested listing name
- Silicified material (state the original substrate)
Care and wear
No institutional care guidance is registered for this material yet; below are its durability indicators and general guidance.
Durability and wearing
Toughness
Brittle; tough when massive
Daily wear
Mohs 7 (varying somewhat by direction and form), fairly wear-resistant with lower daily-wear risk; cleavage is rarely observable and poorly developed, but it is brittle, so a hard knock can still cause conchoidal fracture and rubbing with harder material can scratch it.
Care
Clean with warm water, mild soap and a soft brush, then rinse and dry; it tolerates water well, but if it contains fissures avoid aggressive ultrasonic/steam cleaning and sudden temperature change (basis: source records brittle tenacity, tough when massive, and poor cleavage).
General guidance: LumaLark's general guidance inferred from the material's properties (hardness, toughness, cleavage); not text from the cited source, and not a guarantee for any specific piece.
Scope: This field describes the general physical properties of silicified ornamental material as a material; it makes no durability or safety promise for any specific finished product. Durability of treated (e.g. filled, dyed, coated) or assembled/composite pieces must be assessed separately for the individual item.
Treatments and identification leads
Registered treatmentsThe treatments registered for Silicified Jade are filling and dyeing. Values not givenFilling has the status treated, and dyeing the status colour-treated; stability and prevalence are both registered as “—”, meaning the cited source gives no value, not “none”. Identification cluesIdentification leads for filling are: under magnification the lustre of filled areas differs from the main body of the stone, with gas bubbles visible in the filling; under long-wave and short-wave UV, filled areas often fluoresce differently from the main body; the infrared spectrum shows the characteristic absorption bands of the filler; and luminescence imaging equipment such as a UV fluorescence viewer can show the distribution of the filler. Identification leads for dyeing are: under magnification the colour is unevenly distributed, often concentrated in fractures, grain boundaries or surface depressions, and the colour comes off when wiped with solvents such as acetone or anhydrous ethanol.
This table scrolls sideways on narrow screens.
| Treatment | Market frequency (CIBJO) | Stability (CIBJO) | GB/T 16552 category | JJA/AGL listing | Identification leads |
|---|---|---|---|---|---|
| fillingStatus: treated | — | — | Graded — see §5.4.1, Table 1 | — | See identification leads |
| dyeingStatus: colour treated | — | — | Treatment | — | See identification leads |
Where each treatment acts (schematics): Filled / Fracture-filled · Dyed
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16553—2017; GB/T 16552—2017 Table B.1
Whether a treatment has to show in the name differs between the two rule sets (this site’s paraphrase):
- GB/T 16552—2017: a method classed as treatment has to be stated in the name itself — the method put before the name, or added in brackets after it; a method classed as optimization does not need to appear in the name, though one marked “Optimization (annotation required)” still has to be noted in the quality documents. Source: §5.4.2.1 a), b); §5.4.2.2 a)
- CIBJO Gemstone Book 2022: no longer splits treatments into ones that need specific disclosure and ones that need only general disclosure: every treatment is to be disclosed, and the seller tells the buyer which treatment was used and what special care it calls for. Source: §4.2.5 Note 2, §4.2.5.1, pp.14–15
What this table covers
What this page can give
- Registered treatments, their stability and how often they occur (see the table above)
- Identification leads for each treatment, for use when sending a stone for testing
VerifyNames, standards, technical facts, clauses and sources
Names
The name register below lists 3 names for Silicified Jade in non-Latin scripts: 3 with no restriction recorded on use as a name.
Standard and listing namesThe GB/T 16552—2017 formal name for Silicified Jade comes from the Silicified Jade row of Table A.2, a row that groups silicified wood, silicified coral and silicified asbestos; trade names/synonyms are silicified wood, silicified coral and silicified asbestos (as applicable); the suggested listing name is silicified material (state the original substrate). Names in four languagesFour-language names are given in Simplified Chinese, Traditional Chinese, English (Silicified Jade) and Japanese; for Japan's GSJ, the entry has its own Japanese name, and the wording of Japan's GSJ for this name is not yet verified by this site. Institution usageOn authority wording, the entry's own English name is Silicified Jade; the FTC and CIBJO texts have been checked and have no wording for this name, and GIA and Gem-A are unchecked; bodies without a recorded wording show the entry's own English name, which does not represent their position. Trade and mineralogical namesIn the standard's trade name table, silicified asbestos corresponds to tiger's-eye and hawk's-eye, silicified wood to a Chinese trade name for tree-fossil jade, and for silicified coral the cited source gives no value. Candidate search termsIn the name register, silicified asbestos is matched only once conditions are confirmed, while silicified wood and silicified coral are kept only as candidate search terms.
Name register
Every name recorded for this entry, with how it is classified, whether it may be matched to this entry automatically, whether it may be used as a product name, and the clause it rests on.
This table scrolls sideways on narrow screens.
| Name | Type | Matching | Use as a name | Basis |
|---|---|---|---|---|
| no restriction recorded (3) | ||||
| 木变石Simplified Chinese | narrower name (variety or subtype) | matched only once the condition is confirmed | no restriction recorded | editorial ruling (no clause cited) |
| 硅化木Simplified Chinese | narrower name (variety or subtype) | search candidate only | no restriction recorded | editorial ruling (no clause cited) |
| 硅化珊瑚Simplified Chinese | narrower name (variety or subtype) | search candidate only | no restriction recorded | editorial ruling (no clause cited) |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- 珪化玉 (not yet checked for this body — the entry's own Japanese name is shown)
- Chinese formal name
- 硅化玉 (GB/T 16552—2017 Table A.2, row “Silicified Jade(Silicified Asbestos/ Silicified Wood/ Silicified Coral)”)
- Mineralogical name
- Silicified ornamental material; substrate varies
Four-language names
- 简体中文
- 硅化玉
- 繁體中文
- 硅化玉
- English
- Silicified Jade
- 日本語
- 珪化玉
GB/T 34098 trade names
Table A.1 lists the three basic names under silicified jade on separate rows: Silicified asbestos — 虎睛石 Hujing Shi, 鹰睛石 Yingjing Shi; silicified wood — 树化玉 Shuhua Yu; silicified coral — “—” (none listed).
The full table and naming rule are on the Quartzose Jade page.
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Fossil and mineralized materials
- Identity tier
- Rock / mineral aggregate
- Mineral chemical class
- Mixed / composition-dependent
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
Silicified Jade is listed in GB/T 16552—2017 Annex B, Table B.1 in its Silicified Jade row, which groups silicified wood, silicified coral and silicified asbestos: dyeing improves or changes colour, category treatment; filling improves or changes durability and appearance, category graded. What Table B.1 is, and how the filling grades are defined, are on the Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Table B.1, row “Silicified Jade (Silicified Asbestos/Silicified Wood/Silicified Coral)” (p.16):
This table scrolls sideways on narrow screens.
| Method | Effect | Category |
|---|---|---|
| Dyeing | Improves or changes colour | Treatment |
| Filling | Improves or changes durability and appearance | Graded — see §5.4.1, Table 1 |
What Table B.1 is, and how the “see 5.4.1” grades are defined: see the GB/T 16552: optimization vs treatment page.
What it is and how it's identified
Silicified Jade is a collective term for cryptocrystalline to phanerocrystalline quartz jade formed by silica replacement that preserves the pseudomorph of the original material, mainly silicified asbestos, petrified wood and silicified coral. The composition is registered as quartz (SiO2), possibly with small amounts of opal SiO2·H2O and elements such as Fe, Al, Mg, Ca, Na, K, Mn and Ni; the organic matter in petrified wood consists of compounds containing carbon and hydrogen. The structure is a crystalline aggregate; Mohs hardness 5–7, no cleavage, density 2.48–2.85 g/cm³, and this site's general note is that hardness alone is not enough to judge durability. The optic character is that of an anisotropic aggregate; refractive index is 1.544–1.553, and this site notes that the clause has further sub-grades and the overall value is registered; birefringence cannot be measured on the aggregate. For untreated Silicified Jade, pleochroism cannot be measured on the aggregate, there is no fluorescence, and the lustre is vitreous, greasy or waxy on fracture surfaces, with a silky lustre also seen in silicified asbestos. The UV-visible spectrum is not diagnostic, and the mid-infrared region shows the characteristic infrared absorption bands of quartz; the cat's-eye effect can be seen.
Registered material facts
Each row carries its own source and check date and can be cited on its own; “—” means the cited source gives no value, not “none”.
Definition
Silicified Jade: a collective name for cryptocrystalline to phanerocrystalline quartzose jade that carries silica-replacement pseudomorphs. It mainly includes silicified asbestos, silicified wood and silicified coral.
GB/T 34098—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-17
- Source
- GB/T 34098—2017 Quartzose jade — Classification and nomenclature (GB/T): §4 Table 1, Note (locator checked 2026-09-17)
- Fact checked on
- 2026-09-17
Silicified Jade — composition (chemistry): quartz: SiO2, possibly with a small amount of opal SiO2·H2O; elements such as Fe, Al, Mg, Ca, Na, K, Mn and Ni may be present. In silicified wood the organic matter consists of compounds containing carbon and hydrogen.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-22
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-22)
- Fact checked on
- 2026-09-22
Structure
Silicified Jade — structure (overall): crystalline aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Durability
Silicified Jade — Mohs hardness: 5–7
GB/T 16553—2017
Reference points on this site: Talc 1–3, Fluorite 4, Apatite 5–5.5, Orthoclase 6–6.5, Topaz 8, Diamond 10 (Source: GB/T 16553—2017); Gypsum 1.5–2, Calcite 3, Quartz 7 (Source: Handbook of Mineralogy); Corundum 9 (Source: GIA Gem Encyclopedia (care guide))
- Does this standard apply
- applies to this entry
- General note
- hardness only, not durability
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Physical properties
Silicified Jade — density: 2.48–2.85 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Silicified Jade — optic character: anisotropic aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — refractive index: 1.544–1.553
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — birefringence: not measurable on an aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — pleochroism: not measurable on an aggregate
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — fluorescence (overall): none
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — spectrum (UV-visible): non-characteristic
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — spectrum (infrared): Mid-IR absorption follows the pattern typical of quartz
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — optical effect (chatoyancy): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — magnification: cryptocrystalline structure, granular structure; silicified asbestos: a fibrous texture is also possible; silicified wood: fibrous texture possible, visible wood grain, bark, knots, wormholes and the like; silicified coral: visible coral concentric radial structure.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade — body colour: overall light yellow to yellow, brownish yellow, brownish red, greyish white, greyish black and similar colours.
By variety — silicified asbestos: yellow, brownish yellow, brownish red, dark blue, greyish blue, greenish blue and similar colours; silicified wood: light yellow to yellow, brownish yellow, brownish red, greyish white, greyish black and similar colours; silicified coral: yellowish white, greyish white, yellowish brown, orange-red and similar colours.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- Qualification
In chapter 5 of GB/T 16553—2017, the colour entries of Fei Cui / Jadeite Jade, Natural Glass, Quartzite Jade and other variety clauses also name yellow or a yellowish colour.
- General note
- colour alone is not identity
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
- CIBJO definitions
- chatoyancy
Quality factors
Silicified Jade — quality factor (lustre): vitreous; greasy or waxy on the fracture; silicified asbestos may also show a silky luster.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
This material (RI / SG midpoints): 1.548 / 2.67; Closest values: 1Agate 1.537 / 2.63, 2Shoushan Stone 1.56 / 2.7, 3Changhua Stone 1.56 / 2.6, 4Bamboo Coral 1.57 / 2.65, 5Synthetic Beryl 1.57 / 2.69
Show the full chart (330 registered materials)
Outside the full chart's range, drawn as triangles at the edge (RI / SG midpoints): Hematite 3.045/5.12, Synthetic Rutile 2.76/4.26, Rutile 2.753/4.23, Synthetic Moissanite 2.67/3.22
Testing and market
For filled Silicified Jade, the identification leads are: under magnification, the filled areas have a lustre different from the host jade and gas bubbles can be seen in them; under long-wave and short-wave UV light, the filled areas often fluoresce differently from the host; the infrared spectrum shows the filler's characteristic absorption bands; luminescence imaging equipment such as a UV fluorescence viewer can show where the filler lies; the treatment state for filling is treated. For dyed Silicified Jade, magnification shows uneven colour, often concentrated in fractures, between grains or in surface pits, and the colour comes off when wiped with solvents such as acetone or anhydrous ethanol; the treatment state for dyeing is colour treated. These leads are cited from GB/T 16553—2017, which can be followed for Silicified Jade as a reference only and does not govern this entry directly.
How far testing can go
Silicified Jade that has undergone filling can be identified by the following features: Under magnification the surface luster of the filled part differs from the host jade and gas bubbles show in the filled area; under long- and short-wave UV the filled part mostly fluoresces differently from the host jade; infrared spectra show characteristic absorption bands of the filler; luminescence imaging (UV fluorescence viewer and similar) shows how the filler is distributed.
GB/T 16553—2017
- Treatment state
- treated
- Does this standard apply
- can be followed as a reference only
- Treatment
- filling
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (filling) (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Silicified Jade that has undergone dyeing can be identified by the following features: Under magnification the colour is unevenly distributed and mostly concentrated in fissures, between grains or in surface hollows; wiping with acetone or absolute ethanol can lift the colour.
GB/T 16553—2017
- Treatment state
- colour treated
- Does this standard apply
- can be followed as a reference only
- Treatment
- dyeing
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.6 (dyeing) (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Clause-level definitions
Silicified Jade is registered in the clause-level definitions under the entry Silicified Jade, with the corresponding clause in GB/T 16552—2017 Annex A; Annex A defines Silicified Jade as a silicified ornamental material whose base varies from sample to sample. The cross-check result is that GB/T lists it directly, and no CIBJO entry under the same standalone heading was found.
This table scrolls sideways on narrow screens.
| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Silicified Jade | GB/T 16552-2017 Annex A | Silicified ornamental material; substrate varies | Listed directly by GB/T; CIBJO carries no standalone entry under the same name. |
Evidence and sources
Authority basis and clause sources
Sources
- CIBJO – The World Jewellery Confederation. Gemmological Laboratories Book (Blue Book), Gemmological Commission 2024-1.
- CIBJO – The World Jewellery Confederation. The Gemstone Book (Blue Book), 2022.
- SAMR / SAC (China). GB/T 16552—2017 Gems — Nomenclature.
- RRUFF Project, in partnership with the IMA – International Mineralogical Association. IMA Mineral List.
- Geological Survey of Japan, AIST (Japan). Museum mineral specimens, browse by classification.
- CITES Secretariat. Appendices I, II and III, valid from 5 March 2026.
- AQSIQ / SAC (China). GB/T 34098—2017 Quartzose jade — Classification and nomenclature.
Further reading
Related entries and topic cluster
Parent entry and related pages on this site. Rows marked “Planned” are suggested new content and have no link yet.
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| Page | Content | Status |
|---|---|---|
| Browsing family | Fossil and mineralized materials | Live |
| Treatments recorded for this material | Dyed, Filled / Fracture-filled | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Silicified Jade entry are maintained by the LumaLark wiki and matched one by one to the standard clauses or institutional sources they cite: every fact carries its source (with a clause or page locator) and a check date, so it can be traced back to the original; clause-level definitions also carry a cross-check result. The entry exists so that buyers and sellers can check naming, disclosure and material facts item by item.