On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural organic and biogenic materials · Organic or biogenic material · Natural identity; treatment status unknown
Patterned Amber
Also known asFloral amber (not a recommended name) · Flower amber (not to be used as a name)
A Chinese trade name for Amber sold for its flower-like patterns; the patterns may be natural or produced by treatment, and must be tested and disclosed. Also known as Floral amber. 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 Patterned Amber forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Patterned AmberHow far lab testing can go
- Treatments and enhancements of Patterned AmberThe enhancements and treatments the GB/T and JJA/AGL tables list
- Caring for and wearing Patterned AmberCleaning, heat, chemicals and light, as the cited sources give them
- Hardness, density and refractive index of Patterned AmberEach value with its source and check date
- Patterned Amber 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?
- Listing and disclosing Patterned AmberThe listing name to use; what must be disclosed before sale
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
Hua po is a Chinese-market trade name for amber sold on the basis of a pattern or inclusion appearance. Its material body is amber, and its formation is inherited from amber: resin secreted by ancient trees hardened through burial, volatilisation, polymerisation and fossilisation, possibly trapping plant, insect or gas-bubble inclusions that create a visible pattern or 'flower' inside. Hua po is not an independent material; the name describes appearance only, and the pattern may come from natural inclusions or may relate to treatment, so the name alone cannot establish naturalness, treatment or origin.
Scope: Applies to explaining the inherited origin and identity boundary of this trade name for amber with patterns / inclusions; not applicable to determining the pattern origin, treatment or locality of a specific sample.
Sources GIA Amber Description
Where it forms
Resin-producing trees in ancient forests; during burial and fossilisation the resin may trap surrounding organisms and gas bubbles as inclusions.
Sources GIA Amber Description
How it forms, step by step
Ancient trees secrete resin that may trap plant debris, insects or gas bubbles.
Sources GIA Amber Description
The resin is buried and polymerises and fossilises into amber over geological time.
Sources GIA Amber Description
The trapped inclusions form a visible pattern inside the amber, the appearance basis for the trade name hua po.
Sources GIA Amber Description
The name does not distinguish a natural-inclusion pattern from a treatment-induced one.
Sources GIA Amber Description
Link to appearance
Plant, insect or gas-bubble inclusions enclosed and preserved by hardening resin create a visible internal pattern or 'flower'; the appearance name cannot prove the pattern's cause or the material's naturalness.
Sources GIA Amber Description
Timescale
Inherited from amber: the source places amber's formation tens of millions of years in the past and requires it to be more than a million years old.
Sources GIA Amber Description
Related base materials
- Amber: Parent material (huapo is a trade name for amber with patterns/inclusions)
Supporting findings
Plant and insect inclusions in amber were enclosed and preserved as the resin hardened, creating a visible internal pattern.
Evidence grade BScope: Describes the natural inclusion-trapping mechanism; draws no conclusion on any specimen's pattern.
Sources GIA Amber Description
Amber is a resin-derived organic gem formed when ancient tree sap hardened and fossilised; hua po inherits this parent-material formation.
Evidence grade AScope: Formation of the parent material amber; does not present generic amber facts as unique to hua po.
Sources GIA Amber Description · G&G Winter 2023
The source states amber must be over one million years old, with younger resin of the same kind called copal.
Evidence grade BScope: Applies to the amber/copal age boundary; gives no specimen-specific age.
Sources GIA Amber Description
Other research findings
Hua po is a Chinese-market trade name for amber sold by pattern/inclusion appearance, with amber as parent material; it is not an independent material and the name alone cannot prove composition, treatment or origin.
Evidence grade CScope: Naming/identity judgement; the cited sources give no authoritative definition of 'hua po', and the pattern may be natural or treatment-related, with no cited source on treatment.
Sources GIA Amber Description
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- None of the cited sources defines 'hua po', and no treatment-focused source on treatment-induced patterns is cited.
- It is not possible from the name or appearance alone to determine whether a specimen's pattern is natural or treatment-induced, nor its origin.
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
- Patterned Amber (confirm it is amber, and state treatment and origin evidence)
GB/T 16552—2017 5.1.1 c)
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), Coated (via parent material), Irradiated (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
"Patterned Amber (Chinese trade name: huapo; pattern origin unverified)" is a market name rather than a mineral species name; before using it, verify: Trade name rather than a mineralogical species name. Laboratory identification required before the name is used.
What this means for you
Before buying, check the recommended listing name "Patterned Amber (confirm it is amber, and state treatment and origin evidence)" 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
- Trade name rather than a mineralogical species name.
- Laboratory identification required before the name is used.
- Suggested listing name
- Patterned Amber (confirm it is amber, and state treatment and origin evidence)
Care and wear
Normal care for every gemstone (CIBJO Gemstone Book §6.1), in brief:
- Handle it gently.
- Store pieces apart when not worn, so they cannot scratch each other.
- Clean with warm soapy water and a soft brush.
- Use ultrasonic cleaners only with caution.
The §6.1 wording and the full list of §6.2 special-care letters cited on this page are on the general gem care page.
The item-by-item care advice that the GIA Care and Cleaning Guide gives for the whole class, and so for Patterned Amber, is set out in full under care on the Amber entry.
Care
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 | — | — |
| Coating | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Irradiation | — | — | Treatment | — | — |
| Colour change by heating under pressure | — | — | Treatment | — | — |
| Dyeing | — | — | Treatment | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Amber)
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
For Patterned Amber, "Floral amber" is recorded with no restriction on use as a name, while "Flower amber" must not be used as a name (GB/T 16552—2017 §5.4.2.2 b)); one further name in a non-Latin script is listed in the name register below (1 with no restriction recorded on use as a name).
Names in four languagesPatterned Amber is written the same way in Simplified and Traditional Chinese, as Patterned Amber in English, and in Japanese with a name marked as a Chinese market name. Standard and listing namesUnder GB/T 16552—2017 Table A.3, the corresponding basic name is amber, and Patterned Amber itself is not listed in the standard; the suggested listing name is Patterned Amber (stating amber, treatment and evidence of origin). Trade and mineralogical namesAmong trade names and synonyms, Flower amber is a high-risk search alias registered as unacceptable under GB/T 16552—2017; Floral amber is ambiguous and must not be used interchangeably; a related Chinese name for patterned opaque amber is not fully equivalent and is aligned only once the condition is confirmed. Institution usageOn authority wording, the FTC and CIBJO texts on file have no wording for this name (checked), and the wording of GIA and Gem-A is unchecked; the English form shown for bodies without a recorded wording is the entry's own, qualified as the Chinese trade name huapo with the source of the pattern unverified, and does not represent their position. Japanese namesThe Japanese name shown is the entry's own, and the wording used by the GSJ (Japan) for this name is not yet verified by this site. Trade and mineralogical namesThe mineralogical description can be summarised as amber sold under a Chinese trade name for its pattern or inclusions, whose appearance may be natural or produced by treatment.
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 (2) | ||||
| Floral amberEnglish | market name | never matched to this entry | no restriction recorded | editorial ruling (no clause cited); Note: The meaning of this name is ambiguous, so it cannot be taken to refer to this material and is not matched to this entry. |
| 花蜡Simplified Chinese | market name | matched only once the condition is confirmed | no restriction recorded | editorial ruling (no clause cited) |
| not to be used as a name (1) | ||||
| Flower amberEnglish | market name | matched automatically | not to be used as a name | GB/T 16552—2017 5.4.2.2 b); Note: The entry text flags it as a high-risk search alias. |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- フラワーアンバー（中国市場名） (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)
- 琥珀 (GB/T 16552—2017 Table A.3)
- Mineralogical name
- Amber sold under a Chinese pattern/inclusion trade name; appearance may be natural or treatment-induced
- Trade names and synonyms
- Floral amber (market name; not a recommended name)Not to be used as a name: Flower amber (market name)
Four-language names
- 简体中文
- 花珀
- 繁體中文
- 花珀
- English
- Patterned Amber (Chinese trade name: huapo; pattern origin unverified)
- 日本語
- フラワーアンバー（中国市場名）
Qualifiers stripped from the headline name
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural organic and biogenic materials
- Browsing family
- Amber and natural resin materials
- Identity tier
- Organic or biogenic material
- Mineral chemical class
- Not applicable
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
Patterned Amber is registered under GB/T 16552—2017, Annex B, Table B.1 by applying the “Amber” row; the standard itself has no separate row for Patterned Amber. Under the categories of the “Amber” row, heating is listed as an optimization; filling and coating are marked as graded; irradiation, colour change by heating under pressure, and dyeing are listed as treatments. The full row, with the effect column, is on the Amber entry; what Table B.1 is and how the grades are defined are on this site's Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Under the “Amber” row of Table B.1: Heating Optimization; Filling Graded — see §5.4.1, Table 1; Coating Graded — see §5.4.1, Table 1; Irradiation Treatment; Colour change by heating under pressure Treatment; Dyeing Treatment. The full row, with the effect column, is on the Amber 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.
What it is and how it's identified
Material facts for Patterned Amber take the values of the clauses for amber (the whole class): structure amorphous, no cleavage, no birefringence, optic character isotropic, with strain often causing anomalous extinction and interference colours in Patterned Amber, and it becomes charged when rubbed; density 0.96–1.1 g/cm³, worked out from the cited clause's 1.08 with a stated tolerance of +0.02, −0.12; refractive index 1.54, the reading commonly obtained with the spot method, a typical value rather than an absolute limit, with the overall value taken as the clause also gives finer sub-ranges; untreated Patterned Amber has no pleochroism and a resinous lustre, and melts with an aromatic smell when touched with a hot needle. The Mohs hardness of Patterned Amber is 2–2.5, from a clause covering the whole species, of which Patterned Amber is only one variety.
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, long-wave UV luminescence, short-wave UV luminescence, UV-visible spectrum, infrared spectrum, magnification: these whole-class features are given in the cited clause for amber (whole class), so they are not repeated on the Patterned Amber page; see the material facts on the Amber entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Patterned Amber (how to read class-level values).
Structure
Patterned Amber — structure (overall): amorphous (not crystalline)
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Patterned Amber — Mohs hardness: 2–2.5
GIA Gem Encyclopedia
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))
- Qualification
The clause we cite covers the whole species. This entry is only one variety of it.
Source & check 2026-09-20
- Source
- GIA Gem Encyclopedia — Amber (Gemological Institute of America): Section “FACTS”, “Mohs Hardness” (locator checked 2026-09-28)
- Fact checked on
- 2026-09-20
Patterned Amber — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
stability2 sources compared
Patterned Amber — stability: may melt on contact with a hot needle, giving off an aromatic smell.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Patterned Amber — stability: low hardness, so it scratches easily; chips and cracks easily; dissolves on contact with solvents such as nail varnish remover, so keep it away from all solvents and other strong chemicals; no ultrasonic cleaning; pieces with superficial colour or surface layers are not suitable for re-cutting or re-polishing.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code a, special-care code b, special-care code i, special-care code j, special-care code m
- Treatment state
- untreated
- Qualification
The row we cite covers amber as a whole, and this entry is one of its varieties. The row states a property that holds for every piece alike — whether it dissolves, whether it cracks. That kind of property carries over to this entry. A numeric range such as hardness would not.
Source & check 2026-09-25
- Source
- CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022) (CIBJO): §8 Annex C, Amber, p.32; §6.2 a, b, i, j, m (locator checked 2026-09-21)
- Fact checked on
- 2026-09-25
Physical properties
Patterned Amber — density: 0.96–1.1 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
- Qualification
The clause we cite gives 1.08, with a stated tolerance of +0.02 / -0.12. The range shown here is worked out from that.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Patterned Amber — triboelectricity: may become electrically charged when rubbed
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Optical
Patterned Amber — optic character: isotropic, but stress often gives anomalous extinction along with interference colours.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Patterned Amber — refractive index: 1.54
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
- Qualification
The clause we cite gives this as a value commonly read by the spot (distant-vision) method. It is a common value, not an absolute limit.
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Patterned Amber — birefringence: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Patterned Amber — pleochroism: none
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quality factors
Patterned Amber — quality factor (lustre): resinous
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- amber (whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.5 (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): 1.54 / 1.03; Closest values: 1Turtle Shell 1.545 / 1.31, 2Plastic 1.58 / 1.3, 3Jet 1.66 / 1.32, 4Black Coral 1.565 / 1.71, 5Mammoth Ivory 1.53 / 1.75
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 Patterned Amber under “Amber” (§6.2.1): see identification on the Amber entry; the required tests are listed on the CIBJO laboratory protocol table for Amber.
How far testing can go
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
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.
- GIA – Gemological Institute of America (United States). Gem Encyclopedia: Amber Description.
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.
Related-entry tree for Amber on this site: 10 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Patterned Amber) is marked.
- Amber
Sub-entries (9)
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Amber and natural resin materials | Live |
| Treatments recorded for this material | Heated / Heat-treated (via parent material), Filled / Fracture-filled (via parent material), Coated (via parent material), Irradiated (via parent material), Dyed (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Patterned Amber 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. The entry exists so that buyers and sellers can check naming, disclosure and material facts item by item.