On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Trade name: colour / appearance variety · Natural identity; treatment status unknown
Watermelon Tourmaline
Also known asBicolor tourmaline
A trade name for tourmaline patterned in pink and green colour zones, usually elbaite; “watermelon” describes the colour banding and is not a mineral species name. 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 Watermelon Tourmaline 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 Watermelon TourmalineHow far lab testing can go
- Treatments and enhancements of Watermelon TourmalineThe enhancements and treatments the GB/T and JJA/AGL tables list
- Caring for and wearing Watermelon TourmalineCleaning, heat, chemicals and light, as the cited sources give them
- Hardness, density and refractive index of Watermelon TourmalineEach value with its source and check date
- Watermelon Tourmaline 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 Watermelon TourmalineThe listing name to use; what must be disclosed before sale
- Standard clauses that define Watermelon TourmalineWhich 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
Watermelon tourmaline denotes tourmaline with a pink core and a green outer rim, typically cut into slices to display this concentric zoning. Its origin is tied to growth zoning: crystals grow in stages within granitic pegmatites, and different pockets—or even a single pocket—can yield tourmalines of very different colours, recording changes in fluid composition and colouring elements (such as manganese and iron) that leave concentric bands within one crystal. Watermelon tourmaline is a trade name based on that pattern, not an independent species.
Scope: Applies at the level of a trade name for natural tourmaline classified by its colour-zoning pattern; mineral species and treatment status must be identified separately.
Sources GIA Tourmaline Description · G&G Spring 2007
Where it forms
Tourmaline crystals in granitic pegmatite bodies, growing in stages that produce colour zoning
Sources GIA Tourmaline Description
Central zones and pockets of pegmatites, where pockets—even a single one—may hold very differently coloured tourmalines
Sources GIA Tourmaline Description
How it forms, step by step
A tourmaline crystal grows in stages within a granitic pegmatite
Sources GIA Tourmaline Description
During crystallisation, fluid composition and colouring-element concentrations change, producing concentric colour bands
Sources GIA Tourmaline Description
The pink core and green rim, once sliced, display as a concentric pattern whose appearance depends on the cutting orientation
Sources GIA Tourmaline Description
Link to appearance
Appearance is governed by growth zoning; the colour pattern alone cannot establish the species or origin.
Sources GIA Tourmaline Description · G&G Spring 2007
Timescale
The cited texts give no duration or absolute age for the formation of the watermelon zoning.
Sources GIA Tourmaline Description
Related base materials
- Elbaite (tourmaline supergroup), commonly: Watermelon tourmaline is a commercial name for a concentric colour-zoning pattern; its parent material is usually elbaite
Supporting findings
Watermelon tourmaline is tourmaline that is pink in the centre and green around the outside, typically cut into slices to display this concentric zoning.
Evidence grade BScope: Describes the zoning pattern and slicing convention; no origin, species or treatment inference.
Sources GIA Tourmaline Description
Causes of colour and optical effects
A single crystal may show colour zoning, because different pockets—even a single pocket—can hold very differently coloured tourmalines, reflecting changes in fluid and colouring components during growth.
Evidence grade BScope: General growth-zoning mechanism; the trapiche record describes a different growth pattern, not watermelon zoning itself.
Sources GIA Tourmaline Description · G&G Spring 2007
Other research findings
Synthesis: watermelon tourmaline is a trade name based on a zoning pattern whose parent is commonly elbaite; the pattern itself cannot determine the mineral species.
Evidence grade BScope: A name-level synthesis, not a specimen-level conclusion; species still requires testing.
Sources GIA Tourmaline Description
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- The name is appearance/zoning based; the mineral species still requires testing.
- The sources give no timescale for the formation of the watermelon zoning.
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
- Watermelon Tourmaline
GB/T 16552—2017 5.1.1 c) · CIBJO Gemmological Laboratories Book 2024 §7.2.1.261 “Watermelon tourmaline”
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), Dyed (via parent material), Irradiated (via parent material), Coated (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
"Watermelon Tourmaline" 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 "Watermelon Tourmaline" 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
- Watermelon Tourmaline
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 Watermelon Tourmaline, is set out in full under care on the Tourmaline entry.
Care
Watermelon Tourmaline — care (cleaning): Some stones are susceptible to damage from ultrasonic cleaning. Do not expose them to ultrasonic cleaning.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code j
- Treatment state
- treated
Source & check 2026-09-25
- Source
- Fact checked on
- 2026-09-25
Watermelon Tourmaline — care (chemicals): Treatments with dye, oil, resin, wax or plastic are not permanent; keep it away from all solvents (including dish-washing liquids), chemicals and heat.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code k
- Treatment state
- treated
Source & check 2026-09-25
- Source
- Fact checked on
- 2026-09-25
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Common care questions and matching entries
CleaningCleaning Watermelon Tourmaline: as registered from the CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022), treated Watermelon Tourmaline must not be cleaned ultrasonically. Chemicals and heat: the same CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022) also records that treatments with dye, oil, resin, wax or plastic are not permanent; treated Watermelon Tourmaline should be kept away from all solvents (including dish-washing liquids), chemicals and heat. The GIA Care and Cleaning Guide gives its advice for the whole class, so it also applies to Watermelon Tourmaline, and the item-by-item advice is listed in the care part of the Tourmaline entry.
This table scrolls sideways on narrow screens.
| Question | Matching entries |
|---|---|
| Can it go in an ultrasonic or steam cleaner? | care (cleaning) |
| Contact with acids, alkalis and household chemicals | Treatments with dye, oil, resin, wax or plastic are not permanent; keep it away from all solvents (including dish-washing liquids), chemicals and heat |
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 | — | — |
| Dyeing | — | — | Treatment | — | — |
| Irradiation | — | — | Treatment | — | — |
| Coating | — | — | Treatment | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Tourmaline); 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 Watermelon Tourmaline, the name register records "Bicolor tourmaline", for which no restriction on use as a name is recorded.
Standard and listing namesThe suggested listing name for Watermelon Tourmaline is Watermelon Tourmaline, recorded as a trade name (colour/appearance variety). GB/T 16552—2017 Table A.1 does not list this name, and its GB/T naming counterpart is the base name Tourmaline. Institution usageFor authority wording, the CIBJO Gemmological Laboratories Book 2024 records Watermelon Tourmaline; the FTC text on file has no wording for this name (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. Japanese namesThe entry carries its own Japanese name, and GSJ's wording for it is not yet verified by this site. Names in four languagesThe four-language names are the Simplified and Traditional Chinese names, English Watermelon Tourmaline and the Japanese name. Trade and mineralogical namesThe mineralogical name is recorded as tourmaline zoned pink and green, commonly elbaite; the synonym Bicolor tourmaline is a market name, based on an editorial ruling by this site (no clause cited).
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) | ||||
| Bicolor tourmalineEnglish | 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
- ウォーターメロントルマリン (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)
- 碧玺 (GB/T 16552—2017 Table A.1)
- Mineralogical name
- Zoned pink-green tourmaline, commonly elbaite
- Trade names and synonyms
- Bicolor tourmaline (market name)
Four-language names
- 简体中文
- 西瓜碧玺
- 繁體中文
- 西瓜碧璽
- English
- Watermelon Tourmaline
- 日本語
- ウォーターメロントルマリン
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Tourmaline-supergroup minerals and gem varieties
- Identity tier
- Trade name: colour / appearance variety
- Mineral chemical class
- Silicates
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
GB/T Table B.1For the enhancement and treatment categories of Watermelon Tourmaline, this site applies the Tourmaline row of GB/T 16552—2017 Annex B, Table B.1: heating is listed as an optimization, filling is graded, and dyeing, irradiation and coating are all listed as treatments. What Table B.1 is and how the filling grades are defined are explained on the Gem treatments page, and the full row with the effect column is on the Tourmaline page. JJA/AGL designationsThe JJA/AGL (Japan) table (2025) lists Watermelon Tourmaline under the species tourmaline, with the colour green outside and red to pink inside; the source is the table of principal gem names in the JJA/AGL Definitions and Nomenclature of Gems and Ornamental Materials, revised November 2025; how to read the JJA/AGL table is explained on the Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Under the “Tourmaline” row of Table B.1: Heating Optimization; Filling Graded — see §5.4.1, Table 1; Dyeing Treatment; Irradiation Treatment; Coating Treatment. The full row, with the effect column, is on the Tourmaline 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 |
|---|---|---|---|---|
| Watermelon Tourmaline | Tourmaline | green outside, red to pink inside | an untreated tier is listed |
JJA/AGL definitions and nomenclature (2025 revision), table of principal gem names, p.15
How to read the JJA/AGL table: see the Gem treatments page.
What it is and how it's identified
The composition (phase) of Watermelon Tourmaline is elbaite (tourmaline group). Registered under tourmaline (the whole mineral group): crystalline, trigonal; Mohs hardness 7–8; no cleavage; density 2.46–3.26 g/cm³ (the cited clause gives 3.06 with an allowed deviation of +0.20/−0.60; this site notes that the limits are derived from these); optically anisotropic, uniaxial, negative; refractive index 1.615–1.655 (the cited clause gives 1.624–1.644 with an allowed deviation of +0.011/−0.009; this site notes that the limits are derived from these); birefringence 0.018–0.04 (this site notes that the clause also has finer sub-ranges and the overall value is taken). When untreated, the pleochroism registered for tourmaline as a whole mineral group is moderate to strong, in darker and lighter shades of the body colour, and the lustre is vitreous. The body colour of untreated watermelon tourmaline is pink in the centre and green around the outside; this site notes that in Chapter 7 of the CIBJO Gemmological Laboratories Book the colour descriptions of entries such as unakite, tourmaline and rose quartz also mention pink or pinkish tones.
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”.
Luminescence, UV-visible spectrum, infrared spectrum, magnification: these whole-class features are given in the cited clause for tourmaline (the whole mineral group), so they are not repeated on the Watermelon Tourmaline page; see the material facts on the Tourmaline entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Watermelon Tourmaline (how to read class-level values).
Definition
Watermelon Tourmaline — composition (phase): elbaite (tourmaline group)
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Structure
Watermelon Tourmaline — structure (overall): crystalline
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — structure (crystal system): trigonal
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — structure (crystal habit): rounded trigonal prisms or more complex ditrigonal prism-and-pyramid combinations; the crystal faces are distinctly striated lengthwise.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Watermelon Tourmaline — 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
- tourmaline (the whole mineral group)
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Watermelon Tourmaline — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Watermelon Tourmaline — density: 2.46–3.26 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
- Qualification
The clause we cite gives 3.06, with a stated tolerance of +0.20 / -0.60. The range shown here is worked out from that.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Watermelon Tourmaline — optic character: uniaxial, optically negative (anisotropic)
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — refractive index: 1.615–1.655
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
- Qualification
The clause we cite gives 1.624–1.644, with a stated tolerance of +0.011 / -0.009. The range shown here is worked out from that.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Watermelon Tourmaline — birefringence: 0.018–0.04
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (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): §5.1.10 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Watermelon Tourmaline — pleochroism: moderate to strong, in lighter and deeper shades of the body colour.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — optical effect (chatoyancy): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — optical effect (colour change): seen; rare
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Watermelon Tourmaline — body colour: pink in the centre and green around the periphery.
CIBJO Gemmological Laboratories Book 2024
- Treatment state
- untreated
- Qualification
In chapter 7 of the CIBJO Gemmological Laboratories Book, the colour descriptions of Unakite, Tourmaline, Rose Quartz and other entries also name pink or a pinkish colour.
- General note
- colour alone is not identity
Source & check 2026-09-26
- Source
- Fact checked on
- 2026-09-26
- CIBJO definitions
- chatoyancy, colour change
Quality factors
Watermelon Tourmaline — quality factor (lustre): vitreous
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- tourmaline (the whole mineral group)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.10 (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): 1.635 / 2.86; Closest values: 1Prehnite 1.625 / 2.88, 2Larimar 1.62 / 2.82, 3Datolite 1.646 / 2.95, 4Danburite 1.633 / 3, 5Sugilite 1.61 / 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
Testing and market
The CIBJO laboratory protocol covers Watermelon Tourmaline under “Tourmaline” (§6.1.86): see identification on the Tourmaline entry; the required tests are listed on the CIBJO laboratory protocol table for Tourmaline.
How far testing can go
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
Clause-level definitions
Watermelon Tourmaline is defined directly in CIBJO Gemmological Laboratories Book 2024 under the entry name Watermelon tourmaline, defined as a variety of tourmaline that is pink in the centre and green around the outside. The cross-check result is that it is defined directly by CIBJO, and no identically named English entry was found in the GB/T 16552—2017 annex.
This table scrolls sideways on narrow screens.
| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Watermelon tourmaline | 7.2.1.261 | Variety of tourmaline, which is pink in the centre and green around the periphery | 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 Tourmaline 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 (Watermelon Tourmaline) is marked.
- Tourmaline
Sub-entries (11)
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Tourmaline-supergroup minerals and gem varieties | Live |
| Treatments recorded for this material | Heated / Heat-treated (via parent material), Filled / Fracture-filled (via parent material), Dyed (via parent material), Irradiated (via parent material), Coated (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Watermelon Tourmaline 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.