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Artificial products / Manufactured products · Artificial product type · Artificial material with no natural counterpart
Emerald-Resin Composite
Also known asEmerald and Resins
A man-made composite material of Emerald fragments bound with resin or polymer; it is not natural Emerald and must be named as a composite followed by the names of each component. 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 Emerald-Resin Composite forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Emerald-Resin CompositeIdentification points from the research literature; how far lab testing can go and whether a synthetic exists
- Treatments and enhancements of Emerald-Resin Composite1 registered treatments: status, stability, how common they are and identification leads
- Caring for and wearing Emerald-Resin CompositeCleaning, heat, chemicals and light, as the cited sources give them
- Emerald-Resin Composite 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 Emerald-Resin CompositeThe 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
An emerald-resin composite is an artificial product — a composite stone — not a natural gemstone. CIBJO defines a composite stone as an item made artificially by cementing or otherwise joining two or more previously distinct parts or layers, the constituents of which may be natural, artificial or a mixture, so long as at least one of them is a gemstone; resin, for its part, is an organic material ranging from solid to semisolid and from transparent to opaque. Material of this kind is normally produced by cementing or curing emerald fragments or powder with resin (or polymer), which places it in the artificial-product/treatment domain; it has to be named and disclosed truthfully as a composite/artificial product, and the resin it contains leaves it more vulnerable (less stable) to solvents and heat.
Scope: Applies to explaining the definition, manufacturing method and disclosure boundary of emerald-resin composite as a man-made / composite product; not used to describe the formation of natural emerald.
Sources CIBJO Gemstone Book 2022
Where it forms
Workshop/manufacturing environment: emerald fragments or powder are artificially bonded and cured with resin/polymer, not a natural geological setting.
Sources CIBJO Gemstone Book 2022
Treatment context: resin may also fill gemstone fissures (CIBJO resin-filling treatment), whereas this material refers to resin bonding emerald components into a whole.
Sources CIBJO Gemstone Book 2022
How it forms, step by step
Obtain natural emerald components such as fragments, powder or slices.
Sources CIBJO Gemstone Book 2022
Mix and bond the emerald components using resin or polymer as the binder.
Sources CIBJO Gemstone Book 2022
Cure/press into a coherent whole (within the scope of 'bonding' or 'pressed materials').
Sources CIBJO Gemstone Book 2022
Name and disclose honestly as an artificial/composite product; because of the resin component, avoid solvents and high heat.
Sources CIBJO Gemstone Book 2022
Link to appearance
The resin bonds fragments/powder into a whole and can improve apparent transparency; however, the resin component makes such material more sensitive to solvents and chemicals and less stable.
Sources CIBJO Gemstone Book 2022
Timescale
The sources give no manufacturing or durability timescale; they note only that resin-containing/treated materials are not permanent against solvents, chemicals and heat.
Sources CIBJO Gemstone Book 2022
Related base materials
- Emerald (green beryl): The gem component of the composite
- Resin / polymer: The binder that bonds emerald fragments/powder into a whole
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
The appearance of an emerald–resin composite cannot establish its host material or filling state, and synthetic and treated emeralds often carry inclusions that are evidence of their artificial growth or treatment. Identification rests on measurable properties: magnification of inclusions and internal features in natural, synthetic and treated emerald (oil or resin clarity enhancement commonly shows flattened gas bubbles and a 'flash effect'), and energy-dispersive X-ray fluorescence (EDXRF) can detect flux- and crucible-related trace elements in synthetic emerald (such as Mo, V, Au, Ta and Pt). Limitations: some treatments are visible only under the microscope and instrumentation, so the conclusion must be issued by an accredited gemological laboratory through testing.
Evidence grade AScope: Identification and separation points; testing must be performed by an accredited gemological laboratory, and no self-test thresholds are given.
Origin determination concerns natural material, whereas emerald-resin composite is an assembled composite stone (a manufactured composite) bonded with resin, to which natural origin determination does not apply. For such material the treated or synthetic status must itself first be established by an accredited laboratory using instrumental testing; until then an origin discussion is meaningless. Origin cannot be inferred from appearance or name; and even where some natural material is involved, any origin claim must be issued by an accredited laboratory for a specific specimen. No self-test criteria are given here.
Evidence grade AScope: Origin cannot be inferred from appearance or name; natural origin determination does not apply to this material and its treated/synthetic status must first be established by a laboratory; any conclusion must be issued by an accredited laboratory for a specific specimen; no self-test criteria are given here.
Other research findings
CIBJO defines composite stones as products made artificially: two or more previously distinct parts or layers that have been joined together by cementing or another artificial method, with the constituents able to be natural, artificial or a mixture, subject to the requirement that at least one of those parts is a gemstone.
Evidence grade AScope: The classification of composite stones, applicable to composites whose gemstone component is emerald.
Sources CIBJO Gemstone Book 2022
CIBJO lists 'emerald on glass doublets' and 'emerald on emerald doublets', among others, as examples of composite stones / artificial products with gemstone components.
Evidence grade AScope: Illustrative examples, not exhaustive; resin-bonded types fall in the same artificial-product category.
Sources CIBJO Gemstone Book 2022
Resin is an organic material, ranging from solid to semisolid and from transparent to opaque; treating fissures with resin or polymer corresponds to CIBJO's 'resin filling' treatment (RES), and treated material containing resin is not stable.
Evidence grade AScope: Fissure-filling resin treatment differs in purpose from resin-bonding emerald components, though both belong to the resin system.
Sources CIBJO Gemstone Book 2022
Pressed materials (CIBJO 5.67) are artificial products made by melting or cementing crushed fragments of natural stone into a single coherent mass; they belong to the same artificial-product family as composites bonded with resin.
Evidence grade AScope: A related-category definition; 'pressed' and 'resin-bonded' may differ in specific process.
Sources CIBJO Gemstone Book 2022
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- CIBJO provides definitions and examples for composite stones, resin and pressed materials but gives no dedicated process parameters for an 'emerald-resin composite'.
- This record provides no quantitative stability data or full identification-criteria list for the composite.
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
- Emerald-resin composite
CIBJO Gemstone Book 2022 4.3.2.1 · AGTA Gemstone Information Manual, 17th ed. (2026) p.XIX, p.XIX
Construction or treatment status
Artificial material with no natural counterpart
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
"Emerald-Resin Composite" is a market name rather than a mineral species name; before using it, verify: Not a mineral: man-made or non-mineral material.
Evidence
- CIBJO · 4.3.2.1
What this means for you
Before buying, check the recommended listing name "Emerald-resin composite" 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
- 2026-09-26
Trade-name ruling
- Not a mineral: man-made or non-mineral material.
- Suggested listing name
- Emerald-resin composite
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.
Care
Emerald-Resin Composite — care (chemicals): particularly susceptible to attack by acids, so keep it away from acids; glass, plastic or hardened-resin fillers in cavities or fractures can be scratched more readily than the stone around them, or be more easily damaged by heat or some acids (e.g. hydrofluoric); keep it away from all chemicals, heat and abrasives.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code h, special-care code l
- Treatment state
- treated
- Only after these treatments
- filling
Source & check 2026-09-25
- Source
- Fact checked on
- 2026-09-25
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Common care questions and matching entries
Care for Emerald-Resin Composite is registered against the CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022). TreatedFor treated Emerald-Resin Composite, and only where it has been filled, it is particularly sensitive to acids and should be kept away from them; fillers such as glass, plastic or hardened resin in cavities or fractures may scratch more easily than the host and may also be more sensitive to heat and to certain acids (such as hydrofluoric acid), so it should be kept away from all chemicals, heat and abrasives. General careGeneral care that applies to all gems is in the general care part of the materials index page.
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Treatments and identification leads
Registered treatmentsThe treatment registered for Emerald-Resin Composite is filling. Stability and frequencyFilling has status treated, stability not stable and market prevalence common. Values not givenThe identification leads and source for filling are both given as "—", which means the cited source gives no value, not "none".
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| Treatment | Market frequency (CIBJO) | Stability (CIBJO) | GB/T 16552 category | JJA/AGL listing | Identification leads |
|---|---|---|---|---|---|
| fillingStatus: treated | commonly | unstable | — | — | — |
Where each treatment acts (schematics): Filled / Fracture-filled
“—” means the cited source gives no value for that item, not “none”. Source: CIBJO Gemstone Book 2022
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 Emerald-Resin Composite, the name register records "Emerald and Resins", for which no restriction on use as a name is recorded.
Recommended listing nameThe suggested listing name for Emerald-Resin Composite is Emerald-Resin Composite, and the synonym Emerald and Resins is registered by this site's own ruling, without a clause. Names in four languagesFour-language names are given in Simplified Chinese, Traditional Chinese, English (Emerald-Resin Composite) and Japanese; the Japanese name is the entry's own, and the wording of Japan's GSJ for it is not yet verified by this site. Institution usageOn authority wording, the FTC and CIBJO texts on file have no wording for this name (checked), 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. Chinese standard nameThe original GB/T 16552—2017 does not list this name, and the Chinese standard naming counterpart is emerald (treated). Trade and mineralogical namesThe mineralogical name is a manufactured composite of emerald pieces bonded with resin or polymer.
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) | ||||
| Emerald and ResinsEnglish | synonym | matched automatically | no restriction recorded | editorial ruling (no clause cited) |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- エメラルド・樹脂複合材（待核） (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)
- 祖母绿（处理） (GB/T 16552—2017 §5.4.2.2 a))
- Mineralogical name
- Manufactured composite of emerald pieces bonded with resin or polymer
- Trade names and synonyms
- Emerald and Resins (synonym)
Four-language names
- 简体中文
- 祖母绿-树脂复合材料
- 繁體中文
- 祖母綠-樹脂複合材料
- English
- Emerald-Resin Composite
- 日本語
- エメラルド・樹脂複合材（待核）
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Artificial products / Manufactured products
- Material domain
- Artificial products / Manufactured products
- Browsing family
- Artificial gem products with no natural counterpart
- Identity tier
- Artificial product type
- Mineral chemical class
- Mixed / composition-dependent
- Construction or treatment status
- Artificial material with no natural counterpart
What it is and how it's identified
The registered material fact for Emerald-Resin Composite is the effect stability of filling: for the filling of Emerald-Resin Composite, the effect stability is “unstable”. The registration also states that the treatment status is treated and that the treatment concerned is filling, and it qualifies that what is recorded is whether the effect of this filling treatment is stable, not whether Emerald-Resin Composite itself is durable; the general note is that there is not enough data to reach a complete durability conclusion.
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”.
Durability
For Emerald-Resin Composite, the stability of filling is “unstable”.
CIBJO Gemstone Book 2022
- Treatment state
- treated
- Treatment
- filling
- Qualification
This says how well the treatment holds up, not how durable Emerald-Resin Composite itself is.
- General note
- no durability verdict here
Source & check 2026-09-26
- Source
- 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.
Testing and market
No synthetic Emerald-Resin Composite is available on the market. Among Emerald-Resin Composite in trade, filling occurs “commonly”, with the treatment state treated, specifically filling.
How far testing can go
Emerald-Resin Composite — synthetic counterpart on the market: No synthetic counterpart of this material is commercially available
CIBJO Gemstone Book 2022
- Treatment state
- any treatment state
Source & check 2026-09-26
- Source
- Fact checked on
- 2026-09-26
For Emerald-Resin Composite in trade, the reported frequency of filling is “commonly”.
CIBJO Gemstone Book 2022
- Treatment state
- treated
- Treatment
- filling
Source & check 2026-09-26
- Source
- 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.
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.
- AGTA – American Gem Trade Association (United States). Gemstone Information Manual, 17th edition, August 2026.
- eCFR (United States). 16 CFR Part 23 — Guides for the Jewelry, Precious Metals, and Pewter Industries.
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 | Artificial gem products with no natural counterpart | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Emerald-Resin Composite 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.