On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Mineral / gemstone variety · Natural identity; treatment status unknown
Chrysoprase
Also known asChrysoprase chalcedony
A nickel-bearing green variety of Chalcedony, listed separately in CIBJO Gemmological Laboratories Book 2024 §7.2.1.58, while the name does not appear anywhere in GB/T 16552-2017; the cause of colour must be confirmed. 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 Chrysoprase forms and what gives its colourFormation setting, process and timescale; where its colour and optical effects come from, each finding graded and sourced
- How to identify ChrysopraseIdentification points from the research literature; how far lab testing can go
- Treatments and enhancements of ChrysopraseThe enhancements and treatments the GB/T and JJA/AGL tables list
- Caring for and wearing ChrysopraseCleaning, heat, chemicals and light, as the cited sources give them
- Hardness, density and refractive index of ChrysopraseEach value with its source and check date
- Chrysoprase in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name; and: Which of GIA, FTC, CIBJO and Gem-A have a name for it on record, and do those agree?
- Listing and disclosing ChrysopraseThe listing name to use; what must be disclosed before sale
- Standard clauses that define ChrysopraseWhich 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
Chrysoprase is the nickel-bearing green variety of chalcedony (microcrystalline quartz). Chalcedony is a fibrous microcrystalline low-α quartz, a cryptocrystalline silica material commonly intergrown with moganite. Natural green chalcedony derives its colour from trace chromophore elements: GIA's study of a natural bluish green chalcedony showed the colour to arise from chromium and nickel (with iron, vanadium and copper in some samples), with broad absorption bands near 420 nm and 600 nm and sharp chromium-related peaks at 646 nm, 676 nm and 679 nm; known green chalcedony varieties such as chrysoprase range from yellowish green to greenish blue. Moganite in chalcedony transforms to low-α quartz over geological time, so its content serves as a maturity indicator.
Scope: Applies to the colouring mechanism and identity definition of chrysoprase as nickel-bearing green chalcedony; the specific attribution of nickel colouring follows database classification, this literature was verified on closely related natural chalcedony, and the GB/T clauses cannot be verified.
Sources G&G Winter 2015 · G&G Fall 2013
Where it forms
Cavities in igneous and sedimentary rocks (e.g., basalt geodes); hydrothermal settings
Sources G&G Fall 2013
How it forms, step by step
Silica-bearing fluids enter rock cavities or fractures.
Fibrous microcrystalline low-α quartz (chalcedony), with moganite, precipitates, often growing from the cavity rim inward.
Trace nickel (with chromium, etc.) enters the material, colouring the chalcedony green to bluish green.
Link to appearance
Green reflects trace chromophores (nickel, chromium, etc.); chalcedony is translucent with waxy lustre as a cryptocrystalline aggregate showing granular/fibrous texture on fractures.
Sources G&G Winter 2015
Timescale
Moganite transforms to low-α quartz over tens of millions of years (Heaney, 1995), a maturity/timescale indicator.
Sources G&G Winter 2015 · G&G Fall 2013
Related base materials
- Chalcedony (microcrystalline quartz): variety-of | Chrysoprase is the nickel-bearing green variety of chalcedony (cryptocrystalline quartz)
Supporting findings
Chalcedony is fibrous microcrystalline low-α quartz intergrown with moganite; moganite transforms to low-α quartz over tens of millions of years and its content is a maturity indicator.
Evidence grade AScope: Describes chalcedony mineralogy and maturity; not specific to one colour variety.
Recorded localities
Authoritative sources list the localities below; the list is not exhaustive.
Africa
- Iyobo Mountain mine, Haneti, TanzaniaProbably the most important source after Australia
Sources Gems & Gemology Winter 2009
- Ambatondrazaka, MadagascarTable 1
Sources Gems & Gemology Winter 2009
Asia
- Niigata Prefecture, JapanTable 1
Sources Gems & Gemology Winter 2009
- Sarykul Boldy, KazakhstanTable 1; coordinates country-level only
Sources Gems & Gemology Winter 2009
Europe
- Saxony, GermanyTable 1
Sources Gems & Gemology Winter 2009
- Szklary, Lower Silesia, PolandTable 1
Sources Gems & Gemology Winter 2009
- Southern Urals, RussiaTable 1
Sources Gems & Gemology Winter 2009
North America
- Tulare County, California, United StatesTable 1
Sources Gems & Gemology Winter 2009
South America
- Niquelândia, Goiás, BrazilListed in Table 1 as another source
Sources Gems & Gemology Winter 2009
Oceania
- AustraliaImplied as the most important source
Sources Gems & Gemology Winter 2009
- Marlborough, Queensland, Australia
Sources Gems & Gemology Winter 2009
- Warrawanda and Yerilla Station, Western Australia, Australia
Sources Gems & Gemology Winter 2009
These are localities recorded by authoritative sources, not an origin finding for any individual piece. The CIBJO Gemstone Book (2022, §4.2.3) says a place of origin names where a gem was mined or harvested, is a matter of opinion, does not imply a level of quality, and that cutting, processing or exporting centres must not be used to imply origin. See how far testing can go on this page, the origin determination guide and the overview of recorded localities.
Causes of colour and optical effects
Natural green chalcedony is coloured by trace elements; GIA's study of a natural bluish green chalcedony showed the colour to arise from chromium and nickel.
Evidence grade AScope: Chromophore evidence is from a related natural bluish green chalcedony; chrysoprase is characterised by nickel, by its usual classification.
Sources G&G Winter 2015
How it is identified
Chalcedony in this colour range is often dyed or imitated, and its look does not prove what the material is or whether it was treated. Naming and disclosure rules cover artificial and treated products, but deciding whether a given specimen is natural, dyed or an imitation calls for laboratory testing. The conclusion should come from a qualified gem laboratory; it cannot be inferred from appearance.
Evidence grade BScope: A conservative call: the listed source provides naming and disclosure rules only, with no material-specific tests.
Sources CIBJO Gemstone Book 2022
Other research findings
Well-known green chalcedony forms include chrysoprase and Gem Silica, which range in hue from yellowish green to greenish blue.
Evidence grade AScope: Defines the colour range of green chalcedony varieties; not a specimen identification.
Sources G&G Winter 2015
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- The full texts of GB/T 16552-2017 and GB/T 34098-2017 are not obtainable; no clause text was verified and no classification table was invented.
- The cited sources give no dedicated definition of the Chinese trade name Chrysoprase; the nickel-colour conclusion is drawn from a related natural green/bluish green chalcedony study.
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
- Chrysoprase
CIBJO Gemmological Laboratories Book 2024 §7.2.1.58 “Chrysoprase”
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Heated / Heat-treated (via parent material), Filled / Fracture-filled (via parent material), Dyed (via parent material)
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
The green colouring element and the chalcedony host must be confirmed; dyed imitations are common.
Evidence
- CIBJO · 7.2.1.58
What this means for you
Before buying, check the recommended listing name "Chrysoprase" and any disclosed treatments on this page, and ask the seller for a grading report if in doubt.
Known uncertainty
- Last reviewed
- 2026-09-01
Care and wear
Care
Chrysoprase — care (special care): normal care
AGTA Gemstone Information Manual, 17th ed.
- Treatment state
- untreated
Source & check 2026-09-26
- Source
- AGTA Gemstone Information Manual, 17th edition (August 2026) (AGTA): p.VIII, Gemstone Information Chart, Chrysoprase N, CARE REQUIRED / SPECIAL ADVICE (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Treatments and identification leads
One row per treatment, with three standards side by side: how often it occurs and how stable it is (CIBJO), its category in GB/T 16552—2017 Table B.1 (this site's paraphrase) and how the JJA/AGL 2025 table lists it. Each CIBJO value links to its entry under “Testing and market”, where the wording and source are given in full.
This table scrolls sideways on narrow screens.
| Treatment | Market frequency (CIBJO) | Stability (CIBJO) | GB/T 16552 category | JJA/AGL listing | Identification leads |
|---|---|---|---|---|---|
| Heating | — | — | Optimization | — | — |
| Filling | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Dyeing | — | — | Optimization | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Chalcedony); JJA/AGL 2025
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
Besides Chrysoprase, the name register records "Chrysoprase chalcedony", for which no restriction on use as a name is recorded.
Standard and listing namesChrysoprase is not listed in GB/T 16552—2017; its national-standard naming counterpart is the "Chalcedony (Agate/Jasper)" row of Table A.2. The suggested listing name is "Chrysoprase". Trade and mineralogical namesThe trade name or synonym is Chrysoprase chalcedony, and the mineralogical name is a nickel-bearing green variety of chalcedony. Names in four languagesThe four-language names cover Simplified Chinese, Traditional Chinese, English (Chrysoprase) and Japanese. Institution usageOn authority wording, the CIBJO Gemmological Laboratories Book 2024 lists Chrysoprase; the FTC text has no wording for this name (checked); GIA and Gem-A have not been checked. Japanese namesThe Japanese name is the entry's own, and the GSJ (Japan) wording for Chrysoprase has not yet been verified by this site.
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 (1) | ||||
| Chrysoprase chalcedonyEnglish | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited) |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- クリソプレーズ／緑玉髄 (not yet checked for this body — the entry's own Japanese name is shown)
- GB/T naming counterpart (this name is not in the standard)
- 玉髓 (GB/T 16552—2017 Table A.2, row “Chalcedony(Agate/Jasper)”)
- Mineralogical name
- Green nickel-bearing chalcedony variety
- Trade names and synonyms
- Chrysoprase chalcedony (market name)
Four-language names
- 简体中文
- 绿玉髓
- 繁體中文
- 綠玉髓
- English
- Chrysoprase
- 日本語
- クリソプレーズ／緑玉髄
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Quartz and chalcedony materials
- Identity tier
- Mineral / gemstone variety
- Mineral chemical class
- Silicates
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
GB/T 16552-2017, Annex B, Table B.1
Under the “Chalcedony (Agate/Jasper)” row of Table B.1: Heating Optimization; Filling Graded — see §5.4.1, Table 1; Dyeing Optimization. The full row, with the effect column, is on the Chalcedony page.
What Table B.1 is, and how the “see 5.4.1” grades are defined: see the GB/T 16552: optimization vs treatment page.
JJA/AGL (Japan) table of principal gem names, 2025
This table scrolls sideways on narrow screens.
| Gem name | Species | Colour | Listed in the table | Notes |
|---|---|---|---|---|
| Chrysoprase | Quartz | green (nickel) | an untreated tier is listed |
JJA/AGL definitions and nomenclature (2025 revision), table of principal gem names, p.11
How to read the JJA/AGL table: see the Gem treatments page.
What it is and how it's identified
Chrysoprase is composed of quartz (phase), and when untreated its body colour is light to medium (yellowish) green; composition and body colour are recorded from the CIBJO Gemmological Laboratories Book 2024. This site notes that in the CIBJO Gemmological Laboratories Book the colour descriptions of entries such as demantoid, green quartz and prehnite also mention green or greenish tones. The cited clause in GB/T 16553—2017 is given for chalcedony (including agate and jasper, the whole class): structure (overall) a cryptocrystalline aggregate, dense and massive, and may also form spherulitic, radial or finely fibrous aggregates; Mohs hardness 5–7; density 2.5–2.77 g/cm³; optic character anisotropic aggregate; refractive index 1.535–1.539, and this site notes that the cited clause has finer ranges and the overall value is recorded; birefringence not measurable on an aggregate.
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”.
Chemical composition, luminescence, UV-visible spectrum, infrared spectrum, magnification: these whole-class features are given in the cited clause for chalcedony, including agate and jasper (the whole class), so they are not repeated on the Chrysoprase page; see the material facts on the Chalcedony entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Chrysoprase (how to read class-level values).
Definition
Chrysoprase — composition (phase): quartz
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Structure
Chrysoprase — structure (overall): a cryptocrystalline aggregate, dense and massive in habit; it may also form spherulitic, radial or finely fibrous aggregates.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Chrysoprase — 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
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Chrysoprase — density: 2.5–2.77 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Optical
Chrysoprase — optic character: anisotropic aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — refractive index: 1.535–1.539
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
- General note
- the clause has finer ranges
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — birefringence: not measurable on an aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — transparency: translucent to nearly transparent.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Chrysoprase — pleochroism: not measurable on an aggregate
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — optical effect (iridescence): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — optical effect (chatoyancy): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Chrysoprase — body colour: Light to medium (yellowish) green.
CIBJO Gemmological Laboratories Book 2024
- Treatment state
- untreated
- Qualification
In chapter 7 of the CIBJO Gemmological Laboratories Book, the colour descriptions of Demantoid, Green Quartz, Prehnite and other entries also name green or a greenish colour.
- General note
- colour alone is not identity
Source & check 2026-09-26
- Source
- Fact checked on
- 2026-09-26
- CIBJO definitions
- chatoyancy
Quality factors
Chrysoprase — quality factor (lustre): vitreous to greasy
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- chalcedony, including agate and jasper (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
This material (RI / SG midpoints): 1.537 / 2.63; Closest values: 1Amethyst 1.548 / 2.67, 2Charoite 1.554 / 2.66, 3Changhua Stone 1.56 / 2.6, 4Shoushan Stone 1.56 / 2.7, 5Balin Stone 1.56 / 2.55
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
The CIBJO laboratory protocol covers Chrysoprase under “Chalcedony” (§6.1.16): see identification on the Chalcedony entry; the required tests are listed on the CIBJO laboratory protocol table for Chalcedony.
How far testing can go
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Clause-level definitions
Chrysoprase has a clause-level definition in the CIBJO Gemmological Laboratories Book 2024, under the entry name Chrysoprase. The definition states that the mineral species is quartz and the mineral/gemstone variety is Chrysoprase, with a fuller description referred to the original CIBJO Gemmological Laboratories Book 2024. Cross-check result: defined directly by CIBJO; the same English name was not found directly in the GB/T annex of this edition.
This table scrolls sideways on narrow screens.
| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Chrysoprase | 7.2.1.58 | Light to medium (yellowish) green, translucent to nearly transparent chalcedony; colour due to nickel | Defined directly by CIBJO; no identically named English entry was found in this edition of the GB/T annex. |
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.
Further reading
Recorded cultural contexts
The U.K. National Association of Jewellers chart lists Chrysoprase as an alternative for May. This records trade-association convention only; it does not establish material identity, natural origin, treatment, provenance, or effect.
This table scrolls sideways on narrow screens.
| Publisher or holder | Region | From / period | Source and locator |
|---|---|---|---|
| National Association of Jewellers | United Kingdom | — | National Association of Jewellers, “Zodiac Birthstones Jewellery: Star Signs, Gemstones and Their Meaning” (web page, consulted 2026-08-22) Zodiac birthstone chart, May row: Chrysoprase (Alternative) |
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.
Related-entry tree for Quartz on this site: 74 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Chrysoprase) is marked.
- Quartz
Sub-entries (57)
- Agate
Sub-entries (1)
- Amethyst
- Ametrine
- Aventurine Quartz
- Aventurine Quartz / Green Aventurine
- Banded Agate
- Black Agate
- Bloodstone / Heliotrope
- Blue Lace Agate
- Carnelian
- Chalcedony
Sub-entries (2)
- Chrysoprase
- Citrine
- Clear Quartz / Rock Crystal
- Coated Quartz
- Colourless to White Quartz (brand name: Azeztulite)
- Crazy Lace Agate
- Dendritic Agate
- Dyed Agate (Treated: dyed)
- Elestial Quartz / Skeletal Quartz
- Eye Agate
- Flower Agate / Cherry Blossom Agate
- Green Quartz
- High-clarity quartz with golden needle-like inclusions
- Included Quartz
- Jasper
Sub-entries (1)
- Madeira Citrine
- Malachite Agate
- Morion / very dark Smoky Quartz
- Moss Agate
- Moss Chalcedony
- Multi-inclusion Quartz
- Onyx (banded chalcedony)
- Phantom Quartz
- Prase
- Prasiolite / Green Quartz
- Quartz Cat’s-eye
- Quartz claimed to be from the Himalayas
- Quartz Crystal
- Quartz with dark needle-like inclusions
- Quartz with fine fibrous inclusions
- Quartz with flower-like inclusions
- Quartz with golden needle-like inclusions
- Quartz with green needle-like inclusions
- Quartzite Jade
- Quartzose Jade
- Red Agate
- Rock Crystal
- Rose Quartz
- Rutilated Quartz
- Sard
- Sardonyx
- Silicified Asbestos
Sub-entries (2)
- Hawk’s Eye
- Tiger’s Eye
Sub-entries (1)
- Smoky Quartz
- Smoky Quartz (brown variety)
- Strawberry Quartz
- Yellow-green Quartz
- Agate
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Quartz and chalcedony materials | Live |
| Treatments recorded for this material | Heated / Heat-treated (via parent material), Filled / Fracture-filled (via parent material), Dyed (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Chrysoprase 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.