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UnderstandWhat it is, what people ask, how far this page goes
Artificial products / Manufactured products · Artificial product type · Imitation; record actual material
Pressed Amber
A man-made product made by fusing amber fragments under heat and pressure; GB/T 16552-2017 clause 5.1.3.4 names it "reconstructed 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 Pressed Amber forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Pressed AmberIdentification points from the research literature; how far lab testing can go
- Pressed Amber in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name, names in national standards; and: Do GIA, FTC, CIBJO and Gem-A use the same wording for it?
- Listing and disclosing Pressed AmberThe listing name to use; what must be disclosed before sale
- Standard clauses that define Pressed AmberWhich 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
Pressed amber is a coherent material produced by artificially heat-fusing or bonding fragments and powder of natural amber, and it belongs to CIBJO's pressed-materials category. It is not a solid natural piece of amber: natural amber is an organic gem created by fossilised tree resin over tens of millions of years, while pressed amber comes from breaking amber up and recombining it artificially. CIBJO describes pressed materials as artificial products made by bonding or fusing together ground pieces of natural stone; 'reconstructed' is a misleading term that was used previously and should no longer be used.
Scope: Applies to explaining the man-made nature of pressed amber, how it is distinguished from natural solid amber, and its naming disclosure; not used to describe details of the geological formation of natural amber.
Sources CIBJO Gemstone Book 2022 · GIA Amber Description
Where it forms
Natural occurrence environment does not apply: pressed amber is manufactured in a workshop by heat-fusion or bonding, not formed in nature.
Sources CIBJO Gemstone Book 2022
Imitated/parent object: natural amber forms by fossilisation of ancient tree resin — this is the origin of the parent amber, not of this product.
Sources GIA Amber Description
How it forms, step by step
Collect and crush natural amber into fragments or powder.
Sources CIBJO Gemstone Book 2022
Heat the fragments (with pressure if needed) so they soften and fuse, or bond them with an adhesive, into a coherent mass.
Sources CIBJO Gemstone Book 2022
Cool and set the mass into a workable block.
Sources CIBJO Gemstone Book 2022
Cut, grind and polish into finished pieces, and name/disclose them as pressed amber or an imitation per CIBJO.
Sources CIBJO Gemstone Book 2022
Link to appearance
Pressed amber is used to imitate amber's appearance, but it is a product consolidated from fragments rather than a natural solid; colour alone is inconclusive and its status as an artificially pressed material must be established together with structural observation.
Sources CIBJO Gemstone Book 2022
Timescale
The cited authorities give no manufacturing duration or date of origin for pressed amber.
Sources CIBJO Gemstone Book 2022
Related base materials
- Amber: pressed-material parent | Pressed amber is made by pressing together fragments of natural amber; its parent material is amber
Supporting findings
Pressed amber is a man-made product made by fusing or bonding natural amber fragments into a whole, not a naturally formed solid.
Evidence grade AScope: States the manufacturing route and artificial nature; gives no temperature/pressure parameters.
Sources CIBJO Gemstone Book 2022
Recorded localities
This is a manufactured, assembled or treated product that contains natural material. No locality is given for the finished product; see the parent material's entry for where the natural component is recorded.
How it is identified
Pressed (reconstituted) amber is made by heating and compacting amber fragments, and it can look very close to solid natural amber and to resin imitations, so unaided inspection rarely tells them apart and the compacted texture often needs magnification to detect. Determining whether the material was pressed and establishing its identity rely on laboratory testing such as microscopic structure and spectroscopic instruments; the cited nomenclature sources give no self-test criteria, and conclusions must come from an accredited laboratory.
Evidence grade AScope: Appearance and feel are insufficient; determination requires testing by an accredited laboratory, and this entry gives no self-test method or threshold.
Sources CIBJO Gemstone Book 2022
Other research findings
Pressed amber belongs to CIBJO's category of pressed materials, which the standard describes as artificial products made by fusing or bonding together ground pieces of natural stone.
Evidence grade AScope: A terminology/classification definition; no specific pressing parameters.
Sources CIBJO Gemstone Book 2022
'Reconstructed' is a misleading term used in the past and one that ought not to be used now; under CIBJO, pressed amber has to be named and disclosed as a pressed material, or as an imitation.
Evidence grade AScope: A naming/disclosure rule; not about physical properties.
Sources CIBJO Gemstone Book 2022
CIBJO lists pressed amber among artificial products with gemstone components; it is reprocessed from natural amber, its parent material.
Evidence grade AScope: Defines its relationship to parent amber; does not describe natural amber formation.
Sources CIBJO Gemstone Book 2022
The parent material of pressed amber is natural amber, an organic gem formed by fossilisation of ancient tree resin, distinct from the artificial reprocessing that produces pressed amber.
Evidence grade AScope: Describes the organic-gem nature of parent amber for contrast only; not applicable to pressed amber itself.
Sources GIA Amber Description · G&G Winter 2023
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- The cited authorities give only the definition of pressed materials, not the specific temperature, pressure, equipment or duration used for pressed amber.
- Market nicknames for pressed amber are not covered by the cited sources and are deliberately not introduced here.
- Pressed amber is a reprocessed product and cannot be equated by appearance with natural solid amber.
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
- Pressed Amber / Reconstructed Amber
GB/T 16552—2017 5.1.3.4 · CIBJO Gemstone Book 2022 5.67
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
"Pressed Amber" is a market name rather than a mineral species name; before using it, verify: Not a mineral: man-made or non-mineral material.
Evidence
- GB/T · 5.1.3.4
What this means for you
Before buying, check the recommended listing name "Pressed Amber / Reconstructed Amber" 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
- Not a mineral: man-made or non-mineral material.
- Suggested listing name
- Pressed Amber / Reconstructed Amber
How lab reports word it
Report wording for Pressed Amber is set out under report wording on the Amber entry.
VerifyNames, standards, technical facts, clauses and sources
Names
The name register below lists one name for Pressed Amber in a non-Latin script: 1 with no restriction recorded on use as a name.
Standard and listing namesPressed Amber is a man-made product, also called reconstructed amber (the Chinese standard name), and the suggested listing name is Pressed Amber / Reconstructed Amber. The original GB/T 16552—2017 does not list Pressed Amber; the corresponding standard name is reconstructed amber. Names in four languagesNames are registered in four languages: Simplified Chinese, Traditional Chinese, English (Pressed Amber) and Japanese. Institution usageGIA records Reconstructed Amber (pressed); FTC, CIBJO and Gem-A record Pressed Amber; the wording of the GSJ (Japan) is not yet verified by this site, and the Japanese name shown is the entry's own. The qualifying note separated from the title name for FTC is treatment disclosure; for CIBJO, it is that the material must not be called amber on its own. National standard namesNational and regional standard names: Germany (RAL) uses Gepresster Bernstein, noting rekonstruiert; the EU uses Pressed Amber and stipulates that rekonstruiert/gepresst material must not be sold as Bernstein without qualification; France (DGCCRF) uses Ambre reconstitué, which must not be sold as ambre alone.
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.
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| Name | Type | Matching | Use as a name | Basis |
|---|---|---|---|---|
| no restriction recorded (1) | ||||
| 再造琥珀Simplified Chinese | synonym | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Chinese standard name. |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- プレスドアンバー (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)
- 再造琥珀 (GB/T 16552—2017 §5.1.3.4)
- Mineralogical name
- Artificial product made from amber fragments fused under heat and pressure
Four-language names
- 简体中文
- 压制琥珀
- 繁體中文
- 壓制琥珀
- English
- Pressed Amber
- 日本語
- プレスドアンバー
National and regional formal names
- Germany (RAL)
- Gepresster Bernstein (RAL: rekonstruiert)
- European Union
- Pressed Amber (EU: "rekonstruiert"/"gepresst" must not be sold as "Bernstein" without qualifier)
- France (DGCCRF)
- Ambre reconstitué (DGCCRF: ne pas vendre comme "ambre" seul)
Qualifiers stripped from the headline name
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Artificial products / Manufactured products
- Material domain
- Artificial products / Manufactured products
- Browsing family
- Imitation gem products
- Identity tier
- Artificial product type
- Mineral chemical class
- Mixed / composition-dependent
- Construction or treatment status
- Imitation; record actual material
What it is and how it's identified
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
Pressed Amber: In CIBJO's classification, pressed amber is one of the listed examples of composite stones, i.e. artificial products containing gemstone material.
CIBJO Gemstone Book 2022
- Qualification
This is CIBJO's classification (an institutional manual, not a national standard). CIBJO's definition of pressed materials (§5.67) is on the Reconstructed axis page; §5.69 of the same book calls “reconstructed” a misleading older term, and the same book puts pressed turquoise under §3.2.4, a different class.
The Chinese national standard GB/T 16552 uses a name meaning “reconstructed amber”, so the two systems word this differently.
Source & check 2026-09-28
- Source
- Fact checked on
- 2026-09-28
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Testing and market
The CIBJO laboratory protocol covers Pressed 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.
Clause-level definitions
The clause-level definition for Pressed Amber is registered under the entry Pressed Amber, based on GB/T 16552-2017 Annex A. The registered definition is an artificial product made by fusing amber fragments under heat and pressure. The cross-check result is that GB/T lists it directly, and no CIBJO entry under the same standalone heading was found.
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| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Pressed Amber | GB/T 16552-2017 Annex A | Artificial product made from amber fragments fused under heat and pressure | 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.
- Federal Trade Commission (United States). In the Loupe: Advertising Diamond, Gemstones and Pearls.
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 | Imitation gem products | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Pressed 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; 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.