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
Bamboo Coral
Also known asChinese coral (conditional name) · jointed coral · king coral (conditional name) · mountain coral · sea bamboo coral · tiger coral (conditional name)
A coral with jointed segments that looks like bamboo; it is not a Precious Coral, and on the market it is often dyed to imitate Red Coral. Also known as mountain coral, Chinese coral. 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 Bamboo Coral forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Bamboo CoralIdentification points from the research literature; how far lab testing can go
- Treatments and enhancements of Bamboo CoralThe enhancements and treatments the GB/T and JJA/AGL tables list
- Caring for and wearing Bamboo CoralCleaning, heat, chemicals and light, as the cited sources give them
- Hardness, density and refractive index of Bamboo CoralEach value with its source and check date
- Bamboo Coral 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 Bamboo CoralThe 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
Bamboo coral is a common coral: the large, flexible, segmented species of the family Isididae (subclass Octocorallia), including species of the genera Isis, Lepidsis and Acanella, and is not a precious coral (it does not belong to the Corallidae). Its name comes from the jointed appearance: the skeleton is composed of white calcitic internodes alternating with dark keratinous gorgonian nodes. Bamboo coral is found nearly everywhere, with notable occurrences around Tasmania, New Zealand and the United States. Its pale calcareous part is usually bleached and then dyed red or pink so as to imitate precious coral, so bamboo coral as usually encountered in jewellery is the treated form. Coral itself is skeleton-bearing marine invertebrate of the phylum Cnidaria, formed by nature without human intervention.
Scope: Applies to an overview of the naming boundary of bamboo coral as a common coral of the family Isididae (not precious coral), its skeletal structure, distribution and common treatments; the specific species and legality of origin must be determined separately.
Sources CIBJO Coral Blue Book 2024
Where it forms
Benthic marine settings; bamboo coral is distributed almost globally, with notable records from Tasmania, New Zealand and the United States.
Sources CIBJO Coral Blue Book 2024
How it forms, step by step
The bamboo-coral colony grows on the seabed, forming a segmented skeleton.
Sources CIBJO Coral Blue Book 2024
The skeleton consists of white calcitic internodes alternating with dark keratinous nodes.
Sources CIBJO Coral Blue Book 2024
The pale calcareous portion is usually bleached, then dyed pink or red so as to pass as precious coral.
Sources CIBJO Coral Blue Book 2024
Link to appearance
Bamboo coral shows a jointed, bamboo-like appearance because white calcitic internodes alternate with dark keratinous nodes; the treated white component may appear pink or red.
Sources CIBJO Coral Blue Book 2024
Timescale
The source gives no absolute timescale for bamboo-coral formation or growth.
Sources CIBJO Coral Blue Book 2024
Related base materials
- Common coral (family Isididae): Bamboo coral is a common coral of the family Isididae and is not a precious coral
Supporting findings
Coral is skeleton-bearing marine invertebrate of the phylum Cnidaria, formed by nature without human intervention.
Evidence grade AScope: A material-classification statement.
Sources CIBJO Coral Blue Book 2024
Bamboo coral has a nearly global distribution, being found in particular around New Zealand, Tasmania and the United States.
Evidence grade AScope: A distribution statement.
Sources CIBJO Coral Blue Book 2024
Recorded localities
This is an organic material; its localities are the harvest or culture areas (waters or species ranges) recorded by authoritative sources.
Seas and coasts
- WorldwideCIBJO: bamboo coral occurs practically worldwide; its white calcareous part is often dyed
Sources CIBJO Coral Information Sheet
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.
How it is identified
Bamboo coral resembles bone, horn, and other pale organic materials, and unaided inspection cannot reliably establish its material identity or whether it was dyed or bleached. Confirmation is a laboratory task that generally uses microscopic structure and spectroscopic instruments; the cited sources give no self-identification method, and conclusions must be issued by an accredited laboratory or qualified body.
Evidence grade AScope: Appearance and feel are insufficient; determination requires testing by an accredited laboratory, and this entry provides no self-test method.
Sources CIBJO Coral Blue Book 2024
Other research findings
Bamboo coral comprises the large, flexible, segmented common corals of the family Isididae (subclass Octocorallia), including the genera Isis, Lepidsis and Acanella, and is not a precious coral (it does not belong to the Corallidae).
Evidence grade AScope: Naming and classification; explicitly a common coral.
Sources CIBJO Coral Blue Book 2024
The bamboo coral skeleton alternates white internodes of calcite with dark, keratinous gorgonian nodes.
Evidence grade AScope: Describes skeleton composition and structure.
Sources CIBJO Coral Blue Book 2024
The pale calcareous part of bamboo coral is usually bleached and afterwards dyed red or pink so that it can pass as precious coral; the bamboo coral seen in the market is therefore normally treated.
Evidence grade AScope: A common treatment description; treatment must be disclosed.
Sources CIBJO Coral Blue Book 2024
The trade applies a long list of labels to bamboo coral — among them 'sea bamboo coral', 'mountain coral', 'king coral', 'Chinese coral', 'tiger coral' and 'jointed coral' — so care is needed over naming.
Evidence grade BScope: A trade-name list; not one-to-one with a single species.
Sources CIBJO Coral Blue Book 2024
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- Single source (the CIBJO coral standard), focused on trade classification and nomenclature; it does not describe the physiology of skeleton deposition.
- The database flags this name as requiring identification and compliance review.
- The source gives no absolute timescale for bamboo-coral formation/growth.
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
- Bamboo Coral (state the species and any treatments)
16 CFR Part 23 §23.1 · CIBJO Coral Blue Book 2024 §5.28
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Bleached (via parent material), Filled / Fracture-filled (via parent material), Coated (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
"Bamboo Coral" is a market name rather than a mineral species name; before using it, verify: Laboratory identification required before the name is used.
Evidence
What this means for you
Before buying, check the recommended listing name "Bamboo Coral (state the species and any treatments)" 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
- Laboratory identification required before the name is used.
- Suggested listing name
- Bamboo Coral (state the species and any treatments)
Care and wear
The normal care that applies to all corals, and so to Bamboo Coral (CIBJO Coral Book §6.1), and the special care the source gives for some corals without saying which ones (§6.2), are set out in full under care on the Coral 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 |
|---|---|---|---|---|---|
| Bleaching | — | — | Optimization | — | — |
| Filling | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Coating | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Dyeing | — | — | Treatment | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Coral)
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 Bamboo Coral, the name register records "Chinese coral", "jointed coral", "king coral", "mountain coral", "sea bamboo coral" and "tiger coral", for which no restriction on use as a name is recorded (CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral”; CIBJO Coral Blue Book 2024 Annex C 7.9.2 “Black coral” “accarbaar / akabar / horn coral / king coral”).
Chinese standard nameThe GB/T 16552—2017 naming counterpart for Bamboo Coral is coral (Table A.3); the name itself is not listed in the standard. Trade and mineralogical namesThe mineralogical name describes a coral with a segmented, jointed appearance that is not a precious coral species. Recommended listing nameThe suggested listing name is Bamboo Coral (stating the species and treatment). Names in four languagesNames are registered in four languages: Simplified Chinese, Traditional Chinese, English (Bamboo Coral) and Japanese. Trade and mineralogical namesAs trade names, the CIBJO Coral Blue Book 2024 registers mountain coral, sea bamboo coral, jointed coral, Chinese coral, king coral and tiger coral. Candidate search termsOf these, Chinese coral, king coral and tiger coral are used only as candidate search terms, and king coral is also a trade name for Black coral in the CIBJO Coral Blue Book 2024. Institution usageOn authority wording, the FTC has been checked and its text on file has no wording for Bamboo Coral; GIA, CIBJO and Gem-A are unchecked, and bodies without a recorded wording show the entry's own English name, which does not represent their position. Japanese namesThe Japanese name shown is the entry's own; the wording used by the GSJ (Japan) for Bamboo Coral is not yet 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 (6) | ||||
| Chinese coralEnglish | market name | search candidate only | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral” |
| jointed coralEnglish | market name | matched automatically | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral” |
| king coralEnglish | market name | search candidate only | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral”; CIBJO Coral Blue Book 2024 Annex C 7.9.2 “Black coral” “accarbaar / akabar / horn coral / king coral” |
| mountain coralEnglish | market name | matched automatically | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral” |
| sea bamboo coralEnglish | market name | matched automatically | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral” |
| tiger coralEnglish | market name | search candidate only | no restriction recorded | CIBJO Coral Blue Book 2024 Annex C 7.9.1 “Bamboo coral” “mountain coral / Chinese coral / sea bamboo coral / king coral / tiger coral / jointed coral” |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- 竹珊瑚 (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)
- 珊瑚 (GB/T 16552—2017 Table A.3)
- Mineralogical name
- Segmented coral with jointed appearance; not a precious coral species
- Trade names and synonyms
- mountain coral (market name) · Chinese coral (market name; conditional name) · sea bamboo coral (market name) · tiger coral (market name; conditional name) · jointed coral (market name) · king coral (market name; conditional name)
Four-language names
- 简体中文
- 竹珊瑚
- 繁體中文
- 竹珊瑚
- English
- Bamboo Coral
- 日本語
- 竹珊瑚
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural organic and biogenic materials
- Browsing family
- Coral 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
Treatments for Bamboo Coral are classified by this site applying the “Coral” row of GB/T 16552—2017, Annex B, Table B.1: bleaching is listed as an optimization; dyeing is listed as a treatment; filling and coating are both graded. The full row, with the effect column, is on the Coral entry; what Table B.1 is and how the grades are defined are on the Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Under the “Coral” row of Table B.1: Bleaching Optimization; Filling Graded — see §5.4.1, Table 1; Coating Graded — see §5.4.1, Table 1; Dyeing Treatment. The full row, with the effect column, is on the Coral 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
Bamboo Coral is a common coral of the family Isididae, with white calcitic internodes alternating with dark horny nodes; it is large, flexible and segmented. Items that name a class give the cited clause's value for that class, not a measurement of Bamboo Coral itself. For coral as a whole (calcareous and horny), the inorganic part of calcareous coral is a cryptocrystalline aggregate and its organic part is amorphous, while horny coral is amorphous; optic character is aggregate; untreated, the quality factor (lustre) is waxy, vitreous on polished surfaces. For calcareous coral, Mohs hardness is 3–4.5, density 2.6–2.7 g/cm³ (worked out from the clause value 2.65 and tolerance ±0.05), and refractive index 1.48–1.66 (the reading commonly obtained with the spot method, a typical value rather than an absolute limit). For horny coral, Mohs hardness is 2–3. Both Mohs hardness ranges are for the whole class, not measurements of Bamboo Coral; the two ranges given by the cited clauses cannot be merged, and Bamboo Coral falls under both.
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 calcareous coral, coral as a whole (calcareous and horny), horny coral, so they are not repeated on the Bamboo Coral page; see the material facts on the Coral entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Bamboo Coral (how to read class-level values).
Definition
Bamboo Coral: common coral from species of the large, flexible and segmented species of the Isididae family (subclass Octocorallia) composed of white calcitic internodes and dark keratinous gorgonian nodes, including species of the genus Isis, Lepidsis and Acanella.
CIBJO Coral Blue Book 2024
- Qualification
Its white calcareous parts are commonly bleached, then dyed pink or red, so that they imitate precious coral.
Source & check 2026-09-22
- Source
- CIBJO Blue Book — Coral Book (Coral Commission 2024) (CIBJO): §7.9.1 (Annex B, normative), p.28 (locator checked 2026-09-22)
- Fact checked on
- 2026-09-22
Structure
Bamboo Coral — structure (overall): calcareous coral: the inorganic part is a cryptocrystalline aggregate and the organic part is non-crystalline. Horny coral: non-crystalline.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- coral as a whole (calcareous and horny)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Bamboo Coral — Mohs hardness: 2–3
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
- horny coral
- Qualification
This is the range for the whole class, not a measured value for this variety. The clause gives two ranges that must not be merged and this entry falls under both; the other range is listed alongside it on the same page.
Source & check 2026-09-20
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-20)
- Fact checked on
- 2026-09-20
Bamboo Coral — Mohs hardness: 3–4.5
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
- calcareous coral
- Qualification
This is the range for the whole class, not a measured value for this variety. The clause gives two ranges that must not be merged and this entry falls under both; the other range is listed alongside it on the same page.
Source & check 2026-09-20
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-20)
- Fact checked on
- 2026-09-20
Bamboo Coral — cleavage: generally not seen on an aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- coral as a whole (calcareous and horny)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Bamboo Coral — stability: effervesces on contact with hydrochloric acid
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- calcareous coral
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Bamboo Coral — density: 2.6–2.7 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- calcareous coral
- Qualification
The clause we cite gives 2.65, with a stated tolerance of ±0.05. The range shown here is worked out from that.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Bamboo Coral — optic character: aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- coral as a whole (calcareous and horny)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Bamboo Coral — refractive index: 1.48–1.66
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- calcareous coral
- 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.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Bamboo Coral — pleochroism: not measurable on an aggregate
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- coral as a whole (calcareous and horny)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quality factors
Bamboo Coral — quality factor (lustre): waxy; polished surfaces take a vitreous lustre.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- coral as a whole (calcareous and horny)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.3.4 (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): 1.57 / 2.65; Closest values: 1Scapolite 1.558 / 2.67, 2Changhua Stone 1.56 / 2.6, 3Amethyst 1.548 / 2.67, 4Balin Stone 1.56 / 2.55, 5Qingtian Stone 1.565 / 2.77
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
Related CIBJO terms
- Bamboo coral
common coral from species of the large, flexible and segmented species of the Isididae family (subclass Octocorallia) composed of white calcitic internodes and dark keratinous gorgonian nodes, including species of the genus Isis, Lepidsis and Acanella. The white calcareous component is commonly bleached and then dyed pink or red to imitate precious coral.
CIBJO Blue Book — Coral Book (Coral Commission 2024) (CIBJO): §5.8, p.11
Definitions are quoted verbatim from the cited CIBJO Blue Book; […] marks an excerpt, and the full definition is at the cited clause.
Testing and market
The CIBJO laboratory protocol covers Bamboo Coral under “Coral” (§6.2.4): see identification on the Coral entry; the required tests are listed on the CIBJO laboratory protocol table for Coral.
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.
- Gem-A – The Gemmological Association of Great Britain (United Kingdom).
- eCFR (United States). 16 CFR § 23.1 — Deception (general). In: 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.
Related-entry tree for Coral on this site: 12 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Bamboo Coral) is marked.
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Coral materials | Live |
| Treatments recorded for this material | Bleached (via parent material), Filled / Fracture-filled (via parent material), Coated (via parent material), Dyed (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Bamboo Coral 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.