On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Mineral species · Natural identity; treatment status unknown
Smithsonite
Also known asBonamite
A zinc carbonate mineral species with formula ZnCO3, called Smithsonite in English; the name matches the standard mineralogical 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 Smithsonite forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify SmithsoniteHow far lab testing can go and whether a synthetic exists
- Caring for and wearing SmithsoniteCleaning, heat, chemicals and light, as the cited sources give them; durability indicators and wearing advice
- Hardness, density and refractive index of SmithsoniteEach value with its source and check date
- Smithsonite 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?
- Name origin and history of SmithsoniteWhere the name comes from
- Listing and disclosing SmithsoniteThe listing name to use
- Standard clauses that define SmithsoniteWhich 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
Smithsonite is a zinc carbonate belonging to the calcite group; it develops as a secondary mineral inside the oxidized zone of zinc-bearing deposits, commonly replacing nearby carbonate rocks and sometimes accumulating in ore-grade amounts. It precipitates where supergene fluids carrying zinc encounter a carbonate setting, generally as botryoidal, reniform, spherulitic or stalactitic masses, or as earthy to compact massive material. Two solid-solution series — one with rhodochrosite and one with siderite — allow its composition, and hence its colour, to vary, and it is frequently intergrown with hemimorphite, willemite and hydrozincite.
Scope: Covers the origin and occurrence of smithsonite as a secondary zinc carbonate mineral of the oxidation zone of zinc-bearing deposits; does not address synthetic smithsonite.
Sources Handbook of Mineralogy
Where it forms
The oxidized/supergene zone of zinc-bearing deposits
Sources Handbook of Mineralogy
Adjacent carbonate rocks replaced by smithsonite
Sources Handbook of Mineralogy
A supergene setting intergrown with hemimorphite, willemite, hydrozincite, cerussite and malachite
Sources Handbook of Mineralogy
How it forms, step by step
A zinc ore body forms, made up of primary minerals such as zinc sulfides.
Sources Handbook of Mineralogy
The ore body is exposed at the surface, and weathering and oxidation release zinc into supergene fluids.
Sources Handbook of Mineralogy
Zinc-bearing fluids react with carbonate rocks, precipitating smithsonite and replacing the host rock.
Sources Handbook of Mineralogy
Precipitation builds botryoidal, reniform, spherulitic, or stalactitic aggregates, or earthy to compact massive material.
Sources Handbook of Mineralogy
Link to appearance
Smithsonite shows a wide color range, from white, pale gray and dark gray to brown, yellow, green, apple-green, emerald-green, blue and bluish gray; it typically occurs as botryoidal, reniform, or spherulitic aggregates with vitreous luster that may be pearly, and some material fluoresces pale green or pale blue under UV.
Sources Handbook of Mineralogy
Timescale
These sources do not state an absolute geological timescale for smithsonite formation.
Sources Handbook of Mineralogy
Supporting findings
Smithsonite is a secondary mineral that develops within the oxidized zone of zinc-bearing deposits, where it replaces nearby carbonate rocks and can accumulate in amounts large enough to be mined as ore.
Evidence grade BScope: Applies to the occurrence of natural secondary smithsonite; excludes synthetic material.
Sources Handbook of Mineralogy
Smithsonite occurs intergrown with hemimorphite, willemite, hydrozincite, cerussite, malachite, azurite and other secondary minerals.
Evidence grade BScope: Describes smithsonite's paragenesis, not a universal claim for all localities.
Sources Handbook of Mineralogy
Recorded localities
Authoritative sources list the localities below; the list is not exhaustive.
Africa
- Tsumeb, Namibia
Sources Handbook of Mineralogy
Europe
- Lavrio (Laurium), Attica, Greece
Sources Handbook of Mineralogy
North America
- Kelly mine, Magdalena, Socorro County, New Mexico, United States
Sources Handbook of Mineralogy
- Santa Eulalia, Chihuahua, Mexico
Sources Handbook of Mineralogy
Seas and coasts
- Worldwide
Sources Handbook of Mineralogy
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.
Where the name comes from
Smithsonite honours James Lewis (Macie) Smithson (1754–1829), the British mineralogist and chemist through whose bequest the Smithsonian Institution in Washington, D.C., USA, was founded.
Evidence grade BScope: This states only the origin of the name and does not establish the material's composition, locality, natural origin, or whether it was treated.
Sources Handbook of Mineralogy
Other research findings
Smithsonite is ZnCO3 and a member of the calcite group; it forms two series, one with rhodochrosite and one with siderite.
Evidence grade BScope: Describes smithsonite's composition, mineral group and solid-solution series.
Sources Handbook of Mineralogy
Smithsonite is a distinct mineral species; its name honours the British chemist and mineralogist James Smithson.
Evidence grade BScope: Concerns species identity and naming, not origin or treatment.
Sources Handbook of Mineralogy
Smithsonite ranges from white, gray and brown to yellow, green, apple-green and blue, and some material fluoresces pale green or pale blue under UV.
Evidence grade BScope: Describes appearance and optical properties without explaining the specific cause of color.
Sources Handbook of Mineralogy
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- The only available source (Handbook of Mineralogy) gives occurrence, composition and optical data but does not quantify the P-T conditions or absolute age of smithsonite formation.
- The source lists colors and UV fluorescence but does not explain the specific cause of color, so no claim is made here about what causes the color.
- The end-member proportions of the solid-solution series and their relation to color are not quantified in this source.
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
- Smithsonite
GB/T 16552—2017 Table A.2 “Smithsonite” · CIBJO Gemmological Laboratories Book 2024 §7.2.1.217 “Smithsonite”
Construction or treatment status
Natural identity; treatment status unknown
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
Smithsonite is Smithsonite (ZnCO3); use "Smithsonite" for listings, and disclose any known treatments.
What this means for you
Before buying, check the recommended listing name "Smithsonite" and any disclosed treatments on this page, and ask the seller for a grading report if in doubt.
- Last reviewed
- 2026-09-01
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
Smithsonite — 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
- any treatment state
Source & check 2026-09-25
- Source
- CIBJO Blue Book — Official Gemstone Book (Coloured Stone Commission 2022) (CIBJO): §8 Annex C, Smithsonite, p.76; §6.2 j (locator checked 2026-09-25)
- Fact checked on
- 2026-09-25
Smithsonite — care (chemicals): Some stones are particularly susceptible to attack by acids. Keep them away from acids.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code h
- 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, Smithsonite, p.76; §6.2 h (locator checked 2026-09-25)
- Fact checked on
- 2026-09-25
Smithsonite — care (wear): low hardness, so it scratches easily; wear with care; cleaves or fractures easily or is brittle (e.g. rubbed facet edges); wear with care.
CIBJO Gemstone Book 2022
CIBJO Gemstone Book §6.2:special-care code a, special-care code b
- 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, Smithsonite, p.76; §6.2 a, b (locator checked 2026-09-25)
- 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
The care findings for Smithsonite are registered from the CIBJO Blue Book (Official Gemstone Book, Coloured Stone Commission 2022). CleaningOn cleaning, Smithsonite must not be cleaned ultrasonically, in any treatment state; on chemicals, Smithsonite is particularly vulnerable to acids and must be kept away from them, in any treatment state; on wear, Smithsonite is soft and scratches easily, so it should be worn with care, and it also breaks easily, so it should be worn with care, in any treatment state.
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 | care (chemicals) |
| Wearing limits (knocks, settings) | low hardness, so it scratches easily; wear with care; cleaves or fractures easily or is brittle (e.g. rubbed facet edges); wear with care |
Durability and wearing
VerifyNames, standards, technical facts, clauses and sources
Names
Besides Smithsonite, the name register records "Bonamite", for which no restriction on use as a name is recorded (CIBJO Gemstone Book 2022 Annex 8 “Bonamite”).
Standard and listing namesThe GB/T 16552—2017 formal name for Smithsonite is given in Table A.2, and the suggested listing name is Smithsonite; the common market name is Bonamite, based on CIBJO Gemstone Book 2022. Trade and mineralogical namesThe mineralogical name is Smithsonite, chemical formula ZnCO3. Names in four languagesNames are given in Simplified Chinese, Traditional Chinese, English (Smithsonite) and Japanese, and the GSJ (Japan) formal name is the Japanese mineralogical term for smithsonite. Institution usageOn authority wording, CIBJO's Gemmological Laboratories Book 2024 lists Smithsonite; the FTC text contains no wording for this name (checked); GIA and Gem-A are unchecked, and bodies without a recorded wording show the entry's own English name for Smithsonite, 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) | ||||
| BonamiteEnglish | market name | matched automatically | no restriction recorded | CIBJO Gemstone Book 2022 Annex 8 “Bonamite” |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- 菱亜鉛鉱
- Chinese formal name
- 菱锌矿 (GB/T 16552—2017 Table A.2)
- Mineralogical name
- Smithsonite (ZnCO3)
- Trade names and synonyms
- Bonamite (market name)
Four-language names
- 简体中文
- 菱锌矿
- 繁體中文
- 菱鋅礦
- English
- Smithsonite
- 日本語
- スミソナイト／菱亜鉛鉱
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Carbonate minerals
- Identity tier
- Mineral species
- Mineral chemical class
- Carbonates
- Construction or treatment status
- Natural identity; treatment status unknown
What it is and how it's identified
The chemical composition of Smithsonite is registered as ZnCO3, which may contain elements such as Fe, Mn, Mg and Ca; the structure is crystalline or a crystalline aggregate, with single crystals in the trigonal system. Mohs hardness is given as 4–5 by GB/T 16553—2017 and 4–4.5 by the Handbook of Mineralogy; cleavage is perfect in three directions, generally not visible in aggregates. Density is 4.3–4.45 g/cm³; the cited clause gives 4.30 with a tolerance of +0.15, from which the limits are derived. Refractive index is 1.621–1.849 and birefringence 0.225–0.228; this site notes that the clause has finer sub-ranges and the overall value is registered. Optical character is anisotropic, uniaxial negative, commonly an anisotropic aggregate; transparency is usually translucent, rarely transparent; in the untreated state, lustre is vitreous to subvitreous. For untreated body colour, GB/T 16553—2017 registers white to colourless, often tinted green, yellow, brown, pink and so on by impurity elements, and CIBJO also registers blue, noting that it is usually light in tone and banded.
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”.
Definition
Smithsonite — nomenclature status: IMA status G: grandfathered (described before the IMA existed, and generally regarded as a valid species).
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Smithsonite — composition (chemistry): ZnCO3, elements such as Fe,Mn,Mg and Ca may be contained.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — composition (phase): smithsonite
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Structure
Smithsonite — structure (overall): crystalline, or else a crystalline aggregate
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — structure (crystal system): single crystal: trigonal.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — structure (crystal habit): Rhombohedral crystals are uncommon; material mostly forms granular aggregates, or cryptocrystalline aggregates that are stalactitic, oolitic or kidney-shaped.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-22
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-22)
- Fact checked on
- 2026-09-22
Durability
Mohs hardness2 sources compared
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))
Smithsonite — Mohs hardness: 4–5
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): §5.2.19 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Smithsonite — Mohs hardness: 4–4.5
Handbook of Mineralogy
Source & check 2026-09-20
- Source
- Handbook of Mineralogy — Smithsonite (Mineral Data Publishing): p. 1, Physical Properties (locator checked 2026-09-20)
- Fact checked on
- 2026-09-20
Smithsonite — cleavage: three directions of perfect cleavage, which aggregates usually do not show.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — toughness: cleavage nearly perfect; tenacity brittle
Handbook of Mineralogy
- Treatment state
- untreated
Source & check 2026-09-20
- Source
- Handbook of Mineralogy — Smithsonite (Mineral Data Publishing): p. 1, Physical Properties (locator checked 2026-09-20)
- Fact checked on
- 2026-09-20
Smithsonite — stability: effervesces on contact with hydrochloric acid
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Physical properties
Smithsonite — density: 4.3–4.45 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- Qualification
The clause we cite gives 4.30, with a stated tolerance of +0.15. The range shown here is worked out from that.
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Optical
Smithsonite — optic character: uniaxial, optically negative (anisotropic); usually an anisotropic aggregate.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — refractive index: 1.621–1.849
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — birefringence: 0.225–0.228
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- General note
- the clause has finer ranges
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — transparency: commonly translucent, rarely transparent.
CIBJO Gemmological Laboratories Book 2024
Source & check 2026-09-22
- Source
- Fact checked on
- 2026-09-22
Smithsonite — pleochroism: not measurable on an aggregate
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — fluorescence (overall): varies with colour or origin
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — spectrum (UV-visible): non-characteristic
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — spectrum (infrared): Vibration of the carbonate ion produces diagnostic bands in the mid-IR
GB/T 16553—2017
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Smithsonite — magnification: gas-liquid inclusions, mineral inclusions, cleavage, aggregate usually of cryptocrystalline structure, granular structure, radiate structure.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
body colour2 sources compared
Smithsonite — body colour: white to colorless; impurity elements usually give it green, yellow, brown, pink or similar tints.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- Qualification
In chapter 5 of GB/T 16553—2017, the colour entries of Datolite, Dolomite, Qingtian Stone and other variety clauses also name white or a whitish colour.
- General note
- colour alone is not identity
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Smithsonite — body colour: Green, blue, yellow, brown, pink, white to colourless, often light in tone and banded.
CIBJO Gemmological Laboratories Book 2024
- Treatment state
- untreated
- Qualification
In chapter 7 of the CIBJO Gemmological Laboratories Book, the colour descriptions of Amblygonite, Diaspore, Phenakite 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
How the sources relate
- GB/T 16553—2017 and CIBJO Gemmological Laboratories Book 2024
Both list white to colourless, and green, yellow, brown and pink. The CIBJO Gemmological Laboratories Book also lists blue and notes that the material is often light in tone and banded; GB/T 16553—2017 adds that these colours are commonly due to impurity elements.
Quality factors
Smithsonite — quality factor (lustre): vitreous to sub-vitreous
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
Source & check 2026-09-21
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.2.19 (locator checked 2026-09-21)
- Fact checked on
- 2026-09-21
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
This material (RI / SG midpoints): 1.735 / 4.38; Closest values: 1Ceylon Sapphire 1.768 / 4.03, 2Burma Ruby 1.768 / 4, 3Barite 1.641 / 4.45, 4Tsavorite 1.74 / 3.9, 5Pyrope 1.728 / 3.9
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
How far testing can go
Smithsonite — synthetic counterpart on the market: No synthetic counterpart of this material is commercially available
CIBJO Gemstone Book 2022
- Treatment state
- any treatment state
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
Smithsonite has a clause-level definition in the CIBJO Gemmological Laboratories Book 2024 under the entry Smithsonite; the visible definition text gives a colour range covering green, blue, yellow, brown and pink as well as white to colourless, with tones that are often light and a banded appearance; the cross-check shows it is defined directly by CIBJO and also appears in the GB/T annex. The IMA Mineral List entry records Smithsonite, Zn(CO3) and G 1832, cross-checked against the RRUFF/IMA master mineral list, with a note that public domain data are used.
This table scrolls sideways on narrow screens.
| Term | Clause | Definition | Cross-check |
|---|---|---|---|
| Smithsonite | 7.2.1.217 | Green, blue, yellow, brown, pink, white to colourless, often light in tone and banded; commonly translucent, rarely transparent | Defined directly by CIBJO; also present in the GB/T annex. |
| Smithsonite | IMA Mineral List entry | Smithsonite Zn(CO3) G 1832 | Cross-checked against the RRUFF/IMA master mineral list (public domain data). |
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.
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Carbonate minerals | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Smithsonite 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.