On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Mineral / gemstone variety · Natural identity; treatment status unknown
Tsavorite
Also known asChrome Grossular (conditional name) · Green Grossular Garnet (conditional name) · Tsavolite · Tsavorite garnet
A trade name for green Grossular, not a separate mineral species; neither origin nor treatment can be assumed. Also known as Tsavolite, Chrome Grossular. 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 Tsavorite 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 TsavoriteHow far lab testing can go
- Treatments and enhancements of TsavoriteThe enhancements and treatments the GB/T and JJA/AGL tables list
- Caring for and wearing TsavoriteCleaning, heat, chemicals and light, as the cited sources give them
- Hardness, density and refractive index of TsavoriteEach value with its source and check date
- Tsavorite in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name, names in national standards; and: Which of GIA, FTC, CIBJO and Gem-A have a name for it on record, and do those agree?
- Listing and disclosing TsavoriteThe listing name to use; what must be disclosed before sale
- Standard clauses that define TsavoriteWhich clause defines it, each cross-checked
What we cannot conclude
- Whether one particular bead is natural, treated or synthetic — only a laboratory report can settle that.
- Geographic origin, unless an origin report accompanies the item.
- Price, rarity or investment value: this wiki covers naming and disclosure only.
Material research: formation, causes and history
What authoritative sources say about how this material forms, what causes its colour and optical effects, where its name comes from and how people have used it. Each statement carries an evidence grade and its sources; it describes the material in general, not any specific piece.
How it forms
Tsavorite is the green gem form of grossular garnet rather than a species in its own right. It too develops in metamorphic rocks, yet it is scarcer than red garnet, since its formation calls for unusual rock compositions and specific conditions. A primary deposit at Itrafo, in central Madagascar, has yielded tsavorite and other grossular varieties since 2002; analysed stones proved almost pure grossular (92 mol.%), iron and vanadium acting as the principal chromophores, and both their iron content and their Fe2O3:V2O3 ratio exceeded those typical of tsavorite from better-known deposits.
Scope: Used to describe the formation and coloration of tsavorite as the green variety of grossular; specific locality data are limited to the Itrafo study.
Sources GIA Garnet Description · G&G Fall 2012
Where it forms
Metamorphic rocks of unusual chemistry: green garnet such as tsavorite occurs in metamorphic rocks but needs unusual rock chemistry and special conditions.
Sources GIA Garnet Description
Primary deposit (in-situ veins/mineralised zone): tsavorite and other grossular varieties at Itrafo are recovered from a primary deposit.
Sources GIA Garnet Description
How it forms, step by step
Under metamorphic conditions, rocks with unusual bulk chemistry provide the setting for green grossular to crystallize.
Sources GIA Garnet Description
Iron and vanadium enter the grossular lattice as the main chromophores, producing the green colour.
Sources GIA Garnet Description
The samples are nearly pure grossular (92 mol.%) with an Fe2O3:V2O3 ratio higher than common deposits, reflecting a particular ore chemistry.
Sources GIA Garnet Description
Link to appearance
The green of tsavorite is caused chiefly by iron and vanadium; its composition is nearly pure grossular.
Sources GIA Garnet Description · G&G Fall 2012
Timescale
The sources state no absolute age or duration for garnet formation.
Sources GIA Garnet Description
Related base materials
- Grossular garnet: variety-of | Tsavorite is the green gem variety of grossular, coloured by iron, vanadium and other elements; it is not a separate mineral species
Supporting findings
Tsavorite is a green garnet occurring in metamorphic rocks, rarer than red garnet because it needs unusual rock chemistry and special conditions.
Evidence grade AScope: Uses tsavorite as the example; not all green garnets.
Sources GIA Garnet Description
Recorded localities
Authoritative sources list the localities below; the list is not exhaustive.
Africa
- Taita Hills, near Voi, Taita-Taveta, Kenya
Sources GIA Birthstones · Handbook of Mineralogy
- Merelani Hills, Tanzania
Sources GIA Birthstones · Handbook of Mineralogy
- Lindi Region, Tanzanialarge new deposit found in the 1990s
Sources Gems & Gemology Winter 2000
- Itrafo, Andrembesoa area, Madagascar
Sources GIA Birthstones · G&G Fall 2012
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
At Itrafo, iron and vanadium are the main chromophores, and iron content and the Fe2O3:V2O3 ratio are higher than common tsavorite deposits.
Evidence grade AScope: Chromophore/chemistry result for Itrafo samples; other localities may differ.
Sources G&G Fall 2012
Other research findings
Itrafo tsavorite’s chemistry is almost entirely grossular, at 92 mol.%.
Evidence grade AScope: For twenty-two Itrafo (Madagascar) samples; not all localities.
Sources G&G Fall 2012
Tsavorite is the green gem variety of grossular rather than an independent mineral species.
Evidence grade AScope: Defines its rank as a variety; chemically near-pure grossular.
Sources G&G Fall 2012 · GIA Garnet Description
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- Sources focus on Itrafo (Madagascar) samples; no absolute age or P-T for tsavorite formation.
- Green garnet is illustrated only by tsavorite.
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
- Tsavorite garnet
GB/T 16552—2017 5.1.1 c) · CIBJO Gemmological Laboratories Book 2024 §7.2.1.247 “Tsavorite”
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Heated / Heat-treated (via parent material), Filled / Fracture-filled (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
"Tsavorite" is a market name rather than a mineral species name; before using it, verify: Industry-wide term that does not denote a single species.
What this means for you
Before buying, check the recommended listing name "Tsavorite garnet" 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
- Industry-wide term that does not denote a single species.
- Suggested listing name
- Tsavorite garnet
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.
The item-by-item care advice that the GIA Care and Cleaning Guide gives for the whole class, and so for Tsavorite, is set out in full under care on the Garnet entry.
Care
Tsavorite — care (heat): Some stones are prone to damage due to thermal shock. Do not expose them to extreme temperature changes.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code e
- Treatment state
- any treatment state
Source & check 2026-09-25
- Source
- CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022) (CIBJO): §8 Annex C, Tsavorite, p.55; §6.2 e (locator checked 2026-09-25)
- Fact checked on
- 2026-09-25
Tsavorite — care (special care): normal care, but avoid sudden temperature change.
AGTA Gemstone Information Manual, 17th ed.
- Treatment state
- untreated
Source & check 2026-09-26
- Source
- AGTA Gemstone Information Manual, 17th edition (August 2026) (AGTA): p.X, Gemstone Information Chart, Garnet Tsavorite N, CARE REQUIRED / SPECIAL ADVICE (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.
Common care questions and matching entries
On heat-related care for Tsavorite, the CIBJO Blue Book (Official Gemstone Book, Coloured Stone Commission 2022) records that it is sensitive to sudden temperature changes, in any treatment state; the AGTA (American Gem Trade Association) Gemstone Information Manual, 17th edition, records that when untreated, general care is sufficient but sudden temperature changes should be avoided.
This table scrolls sideways on narrow screens.
| Question | Matching entries |
|---|---|
| Heat and thermal shock | care (heat) |
Care entries by treatment state
The same entries grouped by the treatment state each applies to; each links to its full wording and source. Letters are CIBJO special-care codes, explained on the gemstone care page.
any treatment state
- care (heat) §6.2 e
untreated
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 |
|---|---|---|---|---|---|
| Heating | — | — | Optimization | — | — |
| Filling | — | — | Graded — see §5.4.1, Table 1 | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Garnet); JJA/AGL 2025
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 Tsavorite, the name register records "Chrome Grossular", "Green Grossular Garnet", "Tsavolite" and "Tsavorite garnet", for which no restriction on use as a name is recorded (CIBJO Gemstone Book 2022 Annex 8 “Chrome Grossular”; JJA/AGL Gemstone Nomenclature 2025 p.10; CIBJO Gemstone Book 2022 Annex 8 “Tsavolite”); 2 further names in non-Latin scripts are listed in the name register below (2 with no restriction recorded on use as a name).
Standard and listing namesThe name corresponding to Tsavorite in GB/T 16552—2017 Table A.1 is grossular, and the original GB/T 16552—2017 does not list tsavorite; the suggested listing name is tsavorite garnet, on the basis of GB/T 16552—2017 and the CIBJO Gemmological Laboratories Book 2024. Names in four languagesNames are given in four languages: Simplified Chinese, Traditional Chinese, English (Tsavorite) and Japanese (a katakana transliteration, the GSJ (Japan) formal name). Institution usageCIBJO records Tsavorite; the FTC text on file has no wording for Tsavorite (checked); GIA and Gem-A are unchecked; bodies without a recorded wording show the entry's own English name, which does not represent their position. Trade and mineralogical namesThe market name is Tsavorite garnet; the mineralogical name means green grossular, with chrome-vanadium grossular as a synonym. Candidate search termsChrome Grossular, Green Grossular Garnet and a Japanese katakana form serve only as search candidates. National standard namesGermany (RAL) writes Tsavorit, and the EU writes Tsavorite.
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 (6) | ||||
| Chrome GrossularEnglish | synonym | search candidate only | no restriction recorded | CIBJO Gemstone Book 2022 Annex 8 “Chrome Grossular” |
| Green Grossular GarnetEnglish | synonym | search candidate only | no restriction recorded | JJA/AGL Gemstone Nomenclature 2025 p.10 |
| TsavoliteEnglish | synonym | matched automatically | no restriction recorded | CIBJO Gemstone Book 2022 Annex 8 “Tsavolite” |
| Tsavorite garnetEnglish | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited) |
| グリーン・グロッシュラー・ガーネットJapanese | transliteration | search candidate only | no restriction recorded | JJA/AGL Gemstone Nomenclature 2025 p.10 |
| 铬钒钙铝榴石Simplified Chinese | synonym | matched automatically | no restriction recorded | GB/T 16553—2017 5.1.15 |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- ツァボライト
- GB/T naming counterpart (this name is not in the standard)
- 钙铝榴石 (GB/T 16552—2017 Table A.1)
- Mineralogical name
- Green grossular garnet
- Trade names and synonyms
- Tsavorite garnet (market name) · Tsavolite (synonym) · Chrome Grossular (synonym; conditional name) · Green Grossular Garnet (synonym; conditional name)
Four-language names
- 简体中文
- 沙弗莱石
- 繁體中文
- 沙弗萊石
- English
- Tsavorite
- 日本語
- ツァボライト
National and regional formal names
- Germany (RAL)
- Tsavorit
- European Union
- Tsavorite
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Garnet-group minerals and gem varieties
- Identity tier
- Mineral / gemstone variety
- Mineral chemical class
- Silicates
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
GB/T 16552-2017, Annex B, Table B.1
Under the “Garnet” row of Table B.1: Heating Optimization; Filling Graded — see §5.4.1, Table 1. The full row, with the effect column, is on the Garnet 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.
JJA/AGL (Japan) table of principal gem names, 2025
This table scrolls sideways on narrow screens.
| Gem name | Species | Colour | Listed in the table | Notes |
|---|---|---|---|---|
| Green Grossular Garnet | Grossular | green | an untreated tier is listed | also called tsavorite |
JJA/AGL definitions and nomenclature (2025 revision), table of principal gem names, p.10
How to read the JJA/AGL table: see the Gem treatments page.
What it is and how it's identified
Tsavorite is a green grossular containing chromium and vanadium, with the composition (phase) grossular (garnet group); the refractive index of 1.73–1.75 belongs to Tsavorite itself, while structural, durability and several optical findings take values for garnet as a whole mineral group, and density is given separately for grossular as a whole mineral species and for garnet as a whole mineral group. For garnet as a whole, the structure is crystalline, cubic, with a habit of rhombic dodecahedra or trapezohedra, or combinations of the two; Mohs hardness is 7–8 and cleavage none. For grossular as a whole species, density is 3.57–3.73 g/cm³; this site notes that the cited clause gives 3.61 with a tolerance of +0.12/−0.04, from which the limits are derived; for garnet as a whole group, density is 3.5–4.3 g/cm³, this site noting that the overall value is taken. For garnet as a whole, optical character is isotropic, often with anomalous extinction, and birefringence is none; in the untreated state, for garnet as a whole, lustre is vitreous to subadamantine.
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 garnet (the whole mineral group), so they are not repeated on the Tsavorite page; see the material facts on the Garnet entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Tsavorite (how to read class-level values).
Definition
Tsavorite: green grossular containing chromium and vanadium
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 Additional notes · Chrome-vanadium grossular (locator checked 2026-09-28)
- Fact checked on
- 2026-09-26
Tsavorite — composition (phase): grossular (garnet group)
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Structure
Tsavorite — structure (overall): crystalline
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — structure (crystal system): cubic
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — structure (crystal habit): rhombic dodecahedra, tetragonal trisoctahedra, or crystals combining the two forms.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Tsavorite — Mohs hardness: 7–8
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
- garnet (the whole mineral group)
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Tsavorite — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Tsavorite — density: 3.57–3.73 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- grossular (the whole mineral species)
- Qualification
The clause we cite gives 3.61, with a stated tolerance of +0.12 / -0.04. The range shown here is worked out from that.
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 Density · Grossular (locator checked 2026-09-28)
- Fact checked on
- 2026-09-26
Tsavorite — density: 3.5–4.3 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (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): §5.1.15 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Tsavorite — optic character: isotropic, commonly with anomalous extinction
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — refractive index: 1.73–1.75
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 Additional notes · Chrome-vanadium grossular (locator checked 2026-09-28)
- Fact checked on
- 2026-09-26
Tsavorite — birefringence: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Tsavorite — transparency: transparent.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Tsavorite — pleochroism: none
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — optical effect (asterism): seen; rare; generally a four-pointed star; occasionally a six-rayed star (almandine).
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — optical effect (colour change): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Tsavorite — body colour: vivid green to yellowish green.
CIBJO Gemmological Laboratories Book 2024
- Treatment state
- untreated
- Qualification
In chapter 7 of the CIBJO Gemmological Laboratories Book, the colour descriptions of Chrysoprase, Demantoid, Green Quartz and other entries also name green or a greenish colour.
- General note
- colour alone is not identity
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
- CIBJO definitions
- asterism, colour change
Quality factors
Tsavorite — quality factor (lustre): vitreous to subadamantine
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- garnet (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.15 (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): 1.74 / 3.9; Closest values: 1Pyrope 1.728 / 3.9, 2Rhodolite 1.755 / 3.9, 3Burma Ruby 1.768 / 4, 4Alexandrite 1.749 / 3.73, 5Ceylon Sapphire 1.768 / 4.03
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
In the CIBJO laboratory protocol, Tsavorite is placed under the "Garnet" entry; for identification see that section of the Garnet entry, and the list of required methods is on the laboratory testing page. Tsavorite is distinguished from other varieties by its colouring elements: with treatment status registered as untreated, its colour is mainly caused by vanadium (V3+), with chromium (Cr3+) contributing less. The distinction criteria are recorded in the CIBJO Gemmological Laboratories Book (2024) listing for Tsavorite.
The CIBJO laboratory protocol covers Tsavorite under “Garnet” (§6.1.38): see identification on the Garnet entry; the required tests are listed on the CIBJO laboratory protocol table for Garnet.
How far testing can go
Tsavorite — criteria for distinction from other varieties: colour dominantly due to vanadium (V3+) and to a lesser degree to chromium (Cr3+).
CIBJO Gemmological Laboratories Book 2024
- Treatment state
- untreated
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Clause-level definitions
Tsavorite has a clause-level definition in the CIBJO Gemmological Laboratories Book 2024, where CIBJO lists it under the name Tsavorite and defines it as the vivid green to yellowish green, transparent variety of grossular. The cross-check shows that CIBJO defines it directly, and no English name identical to Tsavorite was found in this edition of the GB/T annex. At clause level, then, Tsavorite corresponds to CIBJO's Tsavorite entry, with a colour range of vivid green to yellowish green, transparent, and belonging to grossular.
This table scrolls sideways on narrow screens.
| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Tsavorite | 7.2.1.247 | vivid green to yellowish green and transparent variety of grossular | Defined directly by CIBJO; no identically named English entry was found in this edition of the GB/T annex. |
Evidence and sources
Authority basis and clause sources
Sources
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 Garnet on this site: 10 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Tsavorite) is marked.
- Garnet
Sub-entries (9)
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Garnet-group minerals and gem varieties | Live |
| Treatments recorded for this material | Heated / Heat-treated (via parent material), Filled / Fracture-filled (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Tsavorite entry are maintained by the LumaLark wiki and matched one by one to the standard clauses or institutional sources they cite: every fact carries its source (with a clause or page locator) and a check date, so it can be traced back to the original; clause-level definitions also carry a cross-check result. The entry exists so that buyers and sellers can check naming, disclosure and material facts item by item.