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Natural inorganic gem materials · Mineral group / supergroup · Natural identity; treatment status unknown
Blue Apatite
Blue gem material of the apatite group; "blue" is only a colour description, and it cannot be assumed to be fluorapatite until the species is determined. 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 Blue Apatite 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 Blue ApatiteHow far lab testing can go
- Caring for and wearing Blue ApatiteCleaning, heat, chemicals and light, as the cited sources give them; durability indicators and wearing advice
- Hardness of Blue ApatiteEach value with its source and check date
- Blue Apatite 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?
- Name origin and history of Blue ApatiteWhere the name comes from
- Listing and disclosing Blue ApatiteThe 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
Blue apatite denotes the blue gem material of the apatite group and is not an independent mineral species; the apatite group is hexagonal with the formula Ca5(PO4)3(F,Cl,OH), the most common member being the fluorine-rich fluorapatite (Ca5(PO4)3F). Fluorapatite is the most common rock-forming phosphate mineral: an accessory mineral in most igneous rocks, important in syenites, alkaline rocks, carbonatites and granite pegmatites, and common in marbles and skarns, Alpine-type fissures and hydrothermal tin veins; it is also an essential component of sedimentary phosphorites, common as a detrital or diagenetic component in oolitic ironstones and phosphatic carbonate rocks and shales, and residual in laterites. Blue apatite is rare and popular; its blue colour is reported to result from the substitution of PO4³⁻ by MnO4³⁻.
Scope: Applies to an overview of the naming boundary, composition, occurrence and cause of blue colour of blue apatite as a blue gem material of the apatite group; the specific species (fluorapatite, etc.) requires identification.
Sources G&G Spring 2013 · Handbook of Mineralogy
Where it forms
An accessory mineral in igneous rocks (especially syenites, alkaline rocks, carbonatites and granite pegmatites).
Sources Handbook of Mineralogy
Marbles and skarns, Alpine-type fissures, hydrothermal tin veins; a component of sedimentary phosphorites.
Sources Handbook of Mineralogy
How it forms, step by step
Crystallizes as an accessory mineral in igneous rocks (syenites, alkaline rocks, carbonatites, granite pegmatites).
Sources Handbook of Mineralogy
Forms or concentrates in metamorphic (marbles, skarns), hydrothermal and sedimentary (phosphorite) settings.
Sources Handbook of Mineralogy
When PO4³⁻ is substituted by MnO4³⁻, the material can be blue (blue apatite).
Sources Handbook of Mineralogy
Link to appearance
Apatite has a variety of colours and is usually transparent to translucent; fluorapatite may be sea-green, violet, purple, blue, pink, yellow, etc., and may be zoned; blue apatite is rare and popular.
Sources G&G Spring 2013 · Handbook of Mineralogy
Timescale
The sources state no absolute timescale for apatite formation.
Sources G&G Spring 2013 · Handbook of Mineralogy
Related base materials
- Apatite group: Blue apatite is gem material of the apatite group that is blue in colour
- Fluorapatite (Ca5(PO4)3F): The most common species in blue apatite is fluorine-rich fluorapatite
Supporting findings
Fluorapatite is the most common rock-forming phosphate mineral: an accessory mineral in most igneous rocks, important in syenites, alkaline rocks, carbonatites and granite pegmatites, and common in marbles and skarns and hydrothermal tin veins.
Evidence grade BScope: Occurrence/genesis overview.
Sources Handbook of Mineralogy
Fluorapatite is an essential component of sedimentary phosphorites, common as a detrital or diagenetic component in oolitic ironstones and phosphatic carbonate rocks and shales, and residual in laterites.
Evidence grade BScope: Sedimentary and residual settings.
Sources Handbook of Mineralogy
Recorded localities
Authoritative sources list the localities below; the list is not exhaustive.
Africa
- MadagascarUsed since the 1990s as a substitute for Paraíba tourmaline
Sources Gems & Gemology Winter 2000
South America
- BrazilBased on a single blue cat's-eye apatite said to be from Brazil
Sources G&G Spring 2013
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
Blue apatite's blue colour is reported to result from the substitution of PO4³⁻ by MnO4³⁻ (this conclusion still requires further verification).
Evidence grade AScope: The colour-cause finding of the cited study; the source itself says the colour origin still needs further research.
Sources G&G Spring 2013
Chatoyancy is very common in apatite crystals with green or yellow bodycolours, but deep-blue apatite with a cat's-eye effect is very rare.
Evidence grade AScope: A statement on the frequency of the optical effect.
Sources G&G Spring 2013
Where the name comes from
The origin of the trade name "blue apatite" itself is not given in the cited sources. The etymology below belongs to the parent minerals: fluorapatite is named for its dominant fluorine and its membership in the apatite group, whose group name comes from a Greek word meaning 'to deceive', because these specimens were so easily mistaken for other minerals. This etymology belongs to the parent minerals, not to the commercial colour name "blue apatite".
Evidence grade BScope: The etymology explains only the origin of the name; it does not establish the material's composition, locality, naturalness, or treatment.
Sources Handbook of Mineralogy
Other research findings
Blue apatite is not an independent mineral species but the blue gem material of the apatite group; the most common member is the fluorine-rich fluorapatite, and the species requires identification.
Evidence grade AScope: Naming and species classification; "blue apatite" is a colour-material name.
Sources G&G Spring 2013 · Handbook of Mineralogy
Apatite-group minerals share the general formula Ca5(PO4)3(F,Cl,OH), while fluorapatite corresponds to Ca5(PO4)3F, where F exceeds Cl or OH.
Evidence grade AScope: Composition and group membership.
Sources G&G Spring 2013 · Handbook of Mineralogy
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- The specific blue colour cause (substitution of PO4³⁻ by MnO4³⁻) is the cited study's finding, and the source itself notes that the stone's colour origin still needs further verification.
- No absolute timescale for apatite formation is given by the sources.
- "Blue apatite" is a colour-material name; the species (fluorapatite/hydroxylapatite/chlorapatite) requires identification.
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
- Blue Apatite (species as stated on the report)
GB/T 16552—2017 5.1.1 c)
Construction or treatment status
Natural identity; treatment status unknown
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
"Blue Apatite" is a market name rather than a mineral species name; before using it, verify: Laboratory identification required before the name is used. Industry-wide term that does not denote a single species.
What this means for you
Before buying, check the recommended listing name "Blue Apatite (species as stated on the report)" 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.
- Industry-wide term that does not denote a single species.
- Suggested listing name
- Blue Apatite (species as stated on the report)
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
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Durability and wearing
Numbers in curly braces, such as {111}, are crystallographic face symbols (Miller indices): each marks a set of crystal faces or cleavage planes. They are reproduced as written in the cited source.
Toughness
Brittle
Cleavage
{0001} and {1010} poor
Daily wear
Hardness about 5 means it is easily scratched by harder materials such as quartz; it is brittle with a conchoidal fracture. In wear it should be kept from hard objects, and high-impact positions such as rings need care.
Care
No cleaning method is given in the source; clean with warm water, mild soap and a soft cloth, avoid ultrasonic/steam cleaning and acidic cleaners, and store separately to prevent abrasion.
General guidance: LumaLark's general guidance inferred from the material's properties (hardness, toughness, cleavage); not text from the cited source, and not a guarantee for any specific piece.
Scope: This field describes the material's general properties and is not a finished-product durability promise; it gives no warranty of any specific piece's durability or safety, and the durability of treated (filled, dyed, coated) or composite/assembled material must be assessed separately.
VerifyNames, standards, technical facts, clauses and sources
Names
Besides Blue Apatite, the name register records "Blue apatite", for which no restriction on use as a name is recorded.
Standard and listing namesThe national-standard naming counterpart for Blue Apatite is apatite (GB/T 16552—2017 Table A.1); the GB/T 16552—2017 text does not list Blue Apatite. The suggested listing name is "Blue Apatite (species as per certificate)". Trade and mineralogical namesThe trade name and synonym is Blue apatite, also registered as an English market name. The mineralogical name is described as a blue apatite-group gem material, commonly fluorapatite, with the species requiring identification. Japanese namesThe Japanese name is the entry's own, and the GSJ (Japan) wording for it has not yet been verified by this site; the names also cover Simplified Chinese, Traditional Chinese and English (Blue Apatite). Institution usageOn authority wording, the FTC and CIBJO texts have no wording for Blue Apatite (checked); the wording of GIA and Gem-A has not been checked; bodies without a recorded wording show the entry's own English name, Blue Apatite, which does not represent their position.
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) | ||||
| Blue apatiteEnglish | 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
- ブルーアパタイト／青色燐灰石 (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)
- 磷灰石 (GB/T 16552—2017 Table A.1)
- Mineralogical name
- Blue apatite-group gem material; commonly fluorapatite, species requires identification
Four-language names
- 简体中文
- 蓝磷灰石
- 繁體中文
- 藍磷灰石
- English
- Blue Apatite
- 日本語
- ブルーアパタイト／青色燐灰石
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Phosphate minerals
- Identity tier
- Mineral group / supergroup
- Mineral chemical class
- Phosphates
- Construction or treatment status
- Natural identity; treatment status unknown
What it is and how it's identified
Among the registered material facts for Blue Apatite, Mohs hardness is 5–5.5; this site notes that the cited hardness clause covers the whole species, of which Blue Apatite is one variety. The stability item states that Blue Apatite is soft, scratches easily and must not be cleaned ultrasonically, for the untreated state; this site notes that the cited stability clause covers apatite as a whole, of which Blue Apatite is one variety: properties such as dissolving or cracking hold for every piece and can be applied as they are, whereas a numeric range such as hardness cannot be carried over directly. Optically, Blue Apatite shows strong pleochroism, blue and yellow to colourless, untreated; fluorescence (overall) is blue to light blue, untreated. Hardness, pleochroism and fluorescence are from GB/T 16553—2017, and stability from the CIBJO Blue Book.
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
Blue Apatite — Mohs hardness: 5–5.5
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
- Qualification
The clause we cite covers the whole species. This entry is only one variety of it.
Source & check 2026-09-20
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.24 (locator checked 2026-09-20)
- Fact checked on
- 2026-09-20
Blue Apatite — stability: low hardness, so it scratches easily; no ultrasonic cleaning.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code a, special-care code j
- Treatment state
- untreated
- Qualification
The row we cite covers apatite 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 2026-09-21
- Source
- CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022) (CIBJO): §8 Annex C, Apatite, p.34; §6.2 a, j (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Blue Apatite — pleochroism: strong; blue, yellow to colourless
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.24 Pleochroism · Blue (locator checked 2026-09-28)
- Fact checked on
- 2026-09-26
Blue Apatite — fluorescence (overall): blue to light blue
GB/T 16553—2017
UV fluorescencebluelight blueDots are illustrative colours built from the colour names, not measured values
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.24 Fluorescence (locator checked 2026-09-28)
- 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
The CIBJO laboratory protocol covers Blue Apatite under “Apatite” (§6.1.7): see identification on the Apatite entry; the required tests are listed on the CIBJO laboratory protocol table for Apatite.
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.
- RRUFF Project, in partnership with the IMA – International Mineralogical Association. IMA Mineral List.
- Geological Survey of Japan, AIST (Japan). Mineral specimen m01719: Apatite.
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.
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Phosphate minerals | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Blue Apatite 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.