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UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Trade name: cultural / brand designation · Natural identity; treatment status unknown
Rainbow Moonstone
Also known asWhite labradorite
A commercial name for white Labradorite showing an iridescent sheen. It should not be labelled as orthoclase Moonstone; giving the Chinese and English names side by side with an explanation is recommended. 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 Rainbow Moonstone 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 Rainbow MoonstoneHow far lab testing can go
- Treatments and enhancements of Rainbow MoonstoneThe enhancements and treatments the GB/T and JJA/AGL tables list
- Hardness, density and refractive index of Rainbow MoonstoneEach value with its source and check date
- Rainbow Moonstone in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name; and: Which of GIA, FTC, CIBJO and Gem-A have a name for it on record, and do those agree?
- Listing and disclosing Rainbow MoonstoneThe 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
‘Rainbow moonstone’ is a trade name for light-bodied (white/near-colourless) labradorite that shows blue (and sometimes other) iridescence — a plagioclase feldspar with roughly An50–An70 composition — so the natural material itself is a feldspar, not a separate mineral species. Its formation and its light show are separate matters: labradorite forms in plutonic rocks, and on extremely slow cooling the plagioclase solid solution exsolves into periodically alternating calcic and sodic nanometer-scale lamellae (the Bøggild intergrowth); white light entering these layers undergoes thin-film and multilayer interference, producing the directional blue iridescence, i.e. structural colour. In 2024 GIA reported a transparent new material with orange flash from Andilamena, Madagascar, confirmed by Raman spectroscopy to be plagioclase of labradorite variety. Note that the market also contains assembled imitations (quartz + gypsum + plastic) and resin-filled treated moonstone, neither of which is a natural feldspar.
Scope: Covers the natural material identity and optical-effect mechanism of the pale labradorite traded as "rainbow moonstone"; does not apply to classic orthoclase-type moonstone or peristerite, nor to assembled imitations or resin-filled material.
Sources G&G Spring 2024 · G&G Summer 2025 · G&G Fall 2013 +1
- New High-Quality Rainbow Moonstone from Madagascar (Gems & Gemology, Spring 2024, Vol. 60, No. 1)
- Structures Behind the Spectacle: A Review of Optical Effects in Phenomenal Gemstones and Their Underlying Nanotextures
- Imitation Rainbow Moonstone Assemblage (Gems & Gemology, Fall 2013)
- Infrared Spectroscopic Study of Filled Moonstone (Gems & Gemology, Spring 2013, Vol. 49, No. 1)
Where it forms
Plutonic settings (gabbro/anorthosite) with extremely slow magma cooling, the natural source of iridescent labradorite including light-bodied material.
Sources G&G Spring 2024 · G&G Fall 2013
The new Andilamena locality (Alaotra-Mangoro region, northeastern Madagascar), which produced translucent orange-flash material reportedly mined in 2023.
Sources G&G Fall 2013 · G&G Spring 2013
How it forms, step by step
A plagioclase solid solution crystallizes in a deep magma chamber, with calcic and sodic components coexisting homogeneously.
Extremely slow cooling drives the solid solution into the miscibility gap, exsolving into periodically alternating calcic/sodic nanometer-scale lamellae (Bøggild intergrowth).
White light undergoes thin-film and multilayer interference at the lamellar interfaces, producing the directional blue (and partly other) iridescence perceived as ‘moonlight’.
Sources G&G Spring 2024 · G&G Summer 2025 · G&G Spring 2013
- New High-Quality Rainbow Moonstone from Madagascar (Gems & Gemology, Spring 2024, Vol. 60, No. 1)
- Structures Behind the Spectacle: A Review of Optical Effects in Phenomenal Gemstones and Their Underlying Nanotextures
- Infrared Spectroscopic Study of Filled Moonstone (Gems & Gemology, Spring 2013, Vol. 49, No. 1)
Inclusion-poor, light-bodied labradorite lets the iridescence come from deeper inside the crystal, an appearance easily confused with classic moonstone — hence the trade name.
GIA used Raman spectroscopy to confirm the Madagascar material as plagioclase of labradorite variety, characterising it as high-quality rainbow moonstone.
Link to appearance
The blue iridescence of natural light-bodied labradorite is structural colour from exsolution lamellae; with few iron oxide inclusions the iridescence appears as a diffuse glow from deeper inside, matching the trade name ‘moonlight’.
Sources G&G Spring 2024 · G&G Summer 2025
Timescale
The sources give no absolute age or duration for labradorite exsolution, describing only the condition of extremely slow cooling.
Sources G&G Spring 2024 · G&G Summer 2025
Related base materials
- Labradorite (plagioclase feldspar, An50–An70): The material referred to by the commercial name; rainbow moonstone is light-coloured/white labradorite
- Feldspar group: Higher-level mineral group
Recorded localities
Authoritative sources list the localities below; the list is not exhaustive.
Africa
- MadagascarTrade name; actually labradorite
Sources GIA Moonstone Description
- Andilamena, MadagascarNew high-transparency material
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
The blue ‘moonlight’ arises from light interference at the alternating microscopic lamellae formed by feldspar exsolution — structural rather than pigment colour; the classic blue moonstone is described as interference from alternating albite and orthoclase layers.
Evidence grade AScope: Applies to moonstone/labradorite with exsolution textures; feldspars lacking them show no such effect.
Other research findings
Rainbow moonstone is a trade name for labradorite showing flashes of various colours including blue; it belongs to the plagioclase group and the calcium-rich labradorite variety, and is itself a feldspar.
Evidence grade AScope: Defines a labradorite trade variety; not equivalent to orthoclase-type classic moonstone.
GIA treats ‘rainbow moonstone’ as a confusing trade name: moonstone is named for its moonlight-like glow, yet rainbow colours are not moonlight, so the name is explicitly criticised in the authoritative literature.
Evidence grade AScope: Terminology critique; the trade continues to use the name widely.
Some specimens submitted as ‘rainbow moonstone’ proved to be assembled material: a natural rock crystal (quartz) base cemented to a gypsum top with an iridescent coating, the whole assemblage coated in colorless plastic — an imitation, not natural feldspar.
Evidence grade AScope: Concerns the four assembled cabochons examined at GIA Carlsbad; not all market material.
Sources G&G Fall 2013
Among blue-adularescent beads traded as moonstone, some were confirmed to be impregnated (filled): direct-transmission IR spectra show absorption peaks at 3053 cm⁻¹ and 3038 cm⁻¹ from a benzene-structure filler, indicating fissures filled with foreign resin — a treated material.
Evidence grade AScope: Concerns albite (moonstone) beads reportedly from Donghai, Jiangsu; the filler has a benzene-ring structure.
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- ‘Rainbow moonstone’ has no mineralogical definition; authorities treat it only as a confusing trade name, and this record follows GIA in assigning the natural material to labradorite.
- No absolute age is given for the exsolution; and the proportion of natural vs. assembled vs. filled market material is not systematically tested.
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
- Rainbow Moonstone (white labradorite)
GB/T 16552—2017 5.1.1 c), 5.3.4 · CIBJO Gemmological Laboratories Book 2024 §7.2.1.191 “Rainbow moonstone”
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Filled / Fracture-filled (via parent material), Coated (via parent material), Diffusion-treated (via parent material), Irradiated (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
"Rainbow Moonstone" is a market name rather than a mineral species name; before using it, verify: Trade name rather than a mineralogical species name.
What this means for you
Before buying, check the recommended listing name "Rainbow Moonstone (white labradorite)" 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.
- Suggested listing name
- Rainbow Moonstone (white labradorite)
Care and wear
No care facts are recorded for this entry itself. Its parent material has care records: see Feldspar.
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 |
|---|---|---|---|---|---|
| Filling | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Coating | — | — | Treatment | — | — |
| Diffusion | — | — | Treatment | — | — |
| Irradiation | — | — | Treatment | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Feldspar)
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 Rainbow Moonstone, the name register records "White labradorite", for which no restriction on use as a name is recorded.
Trade and mineralogical namesRainbow Moonstone is a trade name. Standard and listing namesThe suggested listing name is “Rainbow Moonstone (white labradorite)”, it should not be labelled as orthoclase moonstone, and an explanation in Chinese and English side by side is advised. The corresponding basic name in GB/T 16552—2017 Table A.1 is Labradorite, and the GB/T 16552—2017 text does not list Rainbow Moonstone. Trade and mineralogical namesThe mineralogical name is white labradorite showing iridescence, a plagioclase; the trade name or synonym is White labradorite. Names in four languagesThe names are the same in Simplified and Traditional Chinese, the English is Rainbow Moonstone, and the Japanese is a transliteration; the Japanese GSJ wording for this name is not yet verified by this site, and the Japanese form is the entry's own. Institution usageAmong authority wordings, the CIBJO Gemmological Laboratories Book 2024 lists Rainbow Moonstone; the FTC source text has no wording for this name (checked); GIA and Gem-A have not been checked.
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) | ||||
| White labradoriteEnglish | 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
- レインボームーンストーン (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)
- 拉长石 (GB/T 16552—2017 Table A.1)
- Mineralogical name
- White labradorite (plagioclase feldspar) with adularescence/labradorescence
- Trade names and synonyms
- White labradorite (synonym)
Four-language names
- 简体中文
- 彩虹月光石
- 繁體中文
- 彩虹月光石
- English
- Rainbow Moonstone
- 日本語
- レインボームーンストーン
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Feldspar materials
- Identity tier
- Trade name: cultural / brand designation
- Mineral chemical class
- Silicates
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
For Rainbow Moonstone, this site applies the Feldspar row of GB/T 16552—2017 Annex B, Table B.1, which lists: filling, classed separately by graded definitions; coating, classed as treatment; diffusion, classed as treatment; and irradiation, classed as treatment. The full row of Table B.1 with the effect column is on the Feldspar entry, and the notes to Table B.1 and the definitions of the filling grades are on this site's Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Under the “Feldspar” row of Table B.1: Filling Graded — see §5.4.1, Table 1; Coating Treatment; Diffusion Treatment; Irradiation Treatment. The full row, with the effect column, is on the Feldspar 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
Among the registered material facts for Rainbow Moonstone, the composition (phase) is labradorite (feldspar group) and the transparency is translucent to transparent, from the CIBJO Rainbow moonstone entry; values taken from the clauses for feldspar (the whole mineral group) are not measured on Rainbow Moonstone separately. Registered from the feldspar (whole mineral group) clauses: crystalline, with labradorite triclinic; Mohs hardness 6–6.5, with two directions of perfect cleavage; density 2.55–2.75 g/cm³, refractive index 1.508–1.572 and birefringence 0.005–0.01, and this site notes that the clause has further sub-grades and the overall value is registered; the optic character is anisotropic, biaxial positive or negative; pleochroism is usually absent (treatment state: untreated); the lustre is vitreous (treatment state: untreated); and iridescence is registered as visible. The CIBJO entry additionally registers iridescence and adularescence. Chemical composition, fluorescence, UV-visible spectrum, infrared spectrum and magnification are registered for feldspar (the whole mineral group); see the material facts of the Feldspar entry.
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 feldspar (the whole mineral group), so they are not repeated on the Rainbow Moonstone page; see the material facts on the Feldspar entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Rainbow Moonstone (how to read class-level values).
Definition
Rainbow Moonstone — composition (phase): labradorite (feldspar group)
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Structure
Rainbow Moonstone — structure (overall): crystalline
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — structure (crystal system): Moonstone and amazonite belong to the monoclinic or triclinic system; sunstone and labradorite are triclinic.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — structure (crystal habit): Crystals are tabular or stubby prisms; Carlsbad, polysynthetic and gridiron (cross-hatched) twinning are common.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Rainbow Moonstone — Mohs hardness: 6–6.5
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
- feldspar (the whole mineral group)
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Rainbow Moonstone — cleavage: two directions of perfect cleavage
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Rainbow Moonstone — density: 2.55–2.75 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Rainbow Moonstone — optic character: biaxial and anisotropic; optic sign may be either positive or negative.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — refractive index: 1.508–1.572
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Rainbow Moonstone — birefringence: 0.005–0.01
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Rainbow Moonstone — transparency: translucent to transparent.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Rainbow Moonstone — pleochroism: usually absent
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
optical effect (iridescence)2 sources compared
Rainbow Moonstone — optical effect (iridescence): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — optical effect (iridescence): iridescent.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Rainbow Moonstone — optical effect (chatoyancy): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — optical effect (asterism): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — optical effect (aventurescence): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Rainbow Moonstone — optical effect (adularescence): adularescence.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
- CIBJO definitions
- chatoyancy, asterism, aventurescence, adularescence
Quality factors
Rainbow Moonstone — quality factor (lustre): vitreous
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- feldspar (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.17 (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 / 2.65; Closest values: 1Charoite 1.554 / 2.66, 2Changhua Stone 1.56 / 2.6, 3Shoushan Stone 1.56 / 2.7, 4Balin Stone 1.56 / 2.55, 5Bamboo Coral 1.57 / 2.65
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 Rainbow Moonstone under “Feldspar” (§6.1.34): see identification on the Feldspar entry; the required tests are listed on the CIBJO laboratory protocol table for Feldspar.
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: Moonstone 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 Feldspar on this site: 13 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Rainbow Moonstone) is marked.
- Feldspar
Sub-entries (12)
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Feldspar materials | Live |
| Treatments recorded for this material | Filled / Fracture-filled (via parent material), Coated (via parent material), Diffusion-treated (via parent material), Irradiated (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Rainbow Moonstone 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.