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Gemstones

Diamond, emerald, amethyst and every birthstone — the minerals we wear.

← All collections
115 minerals · Gems & Birthstones · sorted with popular first
VarietyAgate specimen
Agate SiO₂
SilicateTrigonalMohs 6.5–7
Almandine specimen
Almandine Fe²⁺₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
MineraloidAmber specimen
Amber C₁₀H₁₆O (fossil resin)
Organic MineralAmorphousMohs 2–2.5
VarietyAmethyst specimen
Amethyst SiO₂
SilicateTrigonalMohs 7
GroupApatite specimen
Apatite Ca₅(PO₄)₃(F,Cl,OH)
PhosphateHexagonalMohs 5
VarietyAquamarine specimen
Aquamarine Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
Beryl specimen
Beryl Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
VarietyCitrine specimen
Citrine SiO₂
SilicateTrigonalMohs 7
Diamond specimen
Diamond C
Native ElementCubicMohs 10
VarietyEmerald specimen
Emerald Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
Fluorapatite specimen
Fluorapatite Ca₅(PO₄)₃F
PhosphateHexagonalMohs 5
Fluorite specimen
Fluorite CaF₂
HalideCubicMohs 4
Forsterite specimen
Forsterite Mg₂(SiO₄)
SilicateOrthorhombicMohs 6.5–7
GroupGarnet specimen
Garnet X₃Y₂(SiO₄)₃
SilicateCubicMohs 6.5–7.5
Gold specimen
Gold Au
Native ElementCubicMohs 2.5–3
Jade specimen
Jade Jadeite or nephrite
SilicateMonoclinicMohs 6–7
Jadeite specimen
Jadeite NaAlSi₂O₆
SilicateMonoclinicMohs 6–7
VarietyJasper specimen
Jasper SiO₂
SilicateTrigonalMohs 6.5–7
VarietyLabradorite specimen
Labradorite (Ca,Na)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
RockLapis Lazuli specimen
Lapis Lazuli Rock — mainly lazurite
SilicateCubicMohs 5–5.5
GroupLepidolite specimen
Lepidolite K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂
SilicateMonoclinicMohs 2.5–3
Malachite specimen
Malachite Cu₂(CO₃)(OH)₂
CarbonateMonoclinicMohs 3.5–4
VarietyMoonstone specimen
Moonstone KAlSi₃O₈
SilicateMonoclinicMohs 6–6.5
GroupOlivine specimen
Olivine (Mg,Fe)₂SiO₄
SilicateOrthorhombicMohs 6.5–7
Opal specimen
Opal SiO₂·nH₂O
SilicateHexagonalMohs 5.5–6.5
VarietyPeridot specimen
Peridot (Mg,Fe)₂SiO₄
SilicateOrthorhombicMohs 6.5–7
FeaturedQuartz specimen
Quartz SiO₂
SilicateHexagonalMohs 7
Rhodochrosite specimen
Rhodochrosite Mn(CO₃)
CarbonateHexagonalMohs 3.5–4
Rhodonite specimen
Rhodonite CaMn₃Mn(Si₅O₁₅)
SilicateTriclinicMohs 5.5–6.5
VarietyRose Quartz specimen
Rose Quartz SiO₂
SilicateTrigonalMohs 7
VarietyRuby specimen
Ruby Al₂O₃
Oxides & HydroxideTrigonalMohs 9
VarietySapphire specimen
Sapphire Al₂O₃
Oxides & HydroxideTrigonalMohs 9
VarietySmoky Quartz specimen
Smoky Quartz SiO₂
SilicateTrigonalMohs 7
Sodalite specimen
Sodalite Na₄(Si₃Al₃)O₁₂Cl
SilicateCubicMohs 5.5–6
Spodumene specimen
Spodumene LiAlSi₂O₆
SilicateMonoclinicMohs 6.5–7
VarietyTanzanite specimen
Tanzanite Ca₂Al₃(SiO₄)₃(OH)
SilicateOrthorhombicMohs 6–7
Topaz specimen
Topaz Al₂SiO₄F₂
SilicateOrthorhombicMohs 8
GroupTourmaline specimen
Tourmaline (Na,Ca)(Mg,Fe,Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
SilicateTrigonalMohs 7–7.5
Turquoise specimen
Turquoise CuAl₆(PO₄)₄(OH)₈·4H₂O
PhosphateTriclinicMohs 5–6
Zircon specimen
Zircon Zr(SiO₄)
SilicateTetragonalMohs 7.5
VarietyAlexandrite specimen
Alexandrite BeAl₂O₄
Oxides & HydroxideOrthorhombicMohs 8.5
VarietyAmazonite specimen
Amazonite KAlSi₃O₈
SilicateTriclinicMohs 6–6.5
VarietyAmetrine specimen
Ametrine SiO₂
SilicateTrigonalMohs 7
Andalusite specimen
Andalusite Al₂SiO₅
SilicateOrthorhombicMohs 6.5–7.5
Andradite specimen
Andradite Ca₃Fe³⁺₂(SiO₄)₃
SilicateCubicMohs 6.5–7
VarietyAventurine specimen
Aventurine SiO₂
SilicateTrigonalMohs 7
GroupAxinite specimen
Axinite Ca₂(Mn,Fe,Mg)Al₂BSi₄O₁₅(OH)
SilicateTriclinicMohs 6.5–7
Axinite-(Fe) specimen
Axinite-(Fe) Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂
SilicateTriclinicMohs 6.5–7
Benitoite specimen
Benitoite BaTiSi₃O₉
SilicateHexagonalMohs 6–6.5
Brazilianite specimen
Brazilianite NaAl₃(PO₄)₂(OH)₄
PhosphateMonoclinicMohs 5.5
VarietyCarnelian specimen
Carnelian SiO₂
SilicateTrigonalMohs 7
VarietyChalcedony specimen
Chalcedony SiO₂
SilicateTrigonalMohs 6.5–7
Charoite specimen
Charoite (K,Sr,Ba,Mn)₁₅₋₁₆(Ca,Na)₃₂[Si₇₀(O,OH)₁₈₀](OH,F)₄·nH₂O
SilicateMonoclinicMohs 5–6
VarietyChrysoprase specimen
Chrysoprase SiO₂
SilicateTrigonalMohs 7
MineraloidCoral specimen
Coral Aragonite skeleton
CarbonateOrthorhombicMohs 3–4
Cordierite specimen
Cordierite Mg₂Al₄Si₅O₁₈
SilicateOrthorhombicMohs 7–7.5
Corundum specimen
Corundum Al₂O₃
Oxides & HydroxideHexagonalMohs 9
Danburite specimen
Danburite CaB₂Si₂O₈
SilicateOrthorhombicMohs 7–7.5
VarietyDemantoid specimen
Demantoid Ca₃Fe₂(SiO₄)₃
SilicateCubicMohs 6.5–7
Diaspore specimen
Diaspore AlO(OH)
Oxides & HydroxideOrthorhombicMohs 6.5–7
Diopside specimen
Diopside CaMgSi₂O₆
SilicateMonoclinicMohs 5.5–6.5
Dioptase specimen
Dioptase CuSiO₃·H₂O
SilicateHexagonalMohs 5
Elbaite specimen
Elbaite Na(Al₁.₅Li₁.₅)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
SilicateHexagonalMohs 7.5
Euclase specimen
Euclase BeAlSiO₄(OH)
SilicateMonoclinicMohs 7.5
Fluor-liddicoatite specimen
Fluor-liddicoatite Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F
SilicateHexagonalMohs 7.5
VarietyGoshenite specimen
Goshenite Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
Grandidierite specimen
Grandidierite MgAl₃O₂(BO₃)(SiO₄)
SilicateOrthorhombicMohs 7.5
Grossular specimen
Grossular Ca₃Al₂(SiO₄)₃
SilicateCubicMohs 6.5–7
Hambergite specimen
Hambergite Be₂(BO₃)(OH)
BorateOrthorhombicMohs 7.5
VarietyHeliodor specimen
Heliodor Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
VarietyHeliotrope specimen
Heliotrope SiO₂
SilicateTrigonalMohs 7
VarietyHessonite specimen
Hessonite Ca₃Al₂(SiO₄)₃
SilicateCubicMohs 6.5–7
VarietyHiddenite specimen
Hiddenite LiAlSi₂O₆
SilicateMonoclinicMohs 6.5–7
Howlite specimen
Howlite Ca₂SiB₅O₉(OH)₅
SilicateMonoclinicMohs 3.5
VarietyIolite specimen
Iolite (Mg,Fe)₂Al₄Si₅O₁₈
SilicateOrthorhombicMohs 7–7.5
MineraloidJet specimen
Jet C — fossilized wood
Organic MineralAmorphousMohs 2.5–4
Kornerupine specimen
Kornerupine (Mg,Fe²⁺,Al,   )₁₀(Si,Al,B)₅O₂₁(OH,F)₂
SilicateOrthorhombicMohs 6.5–7
VarietyKunzite specimen
Kunzite LiAlSi₂O₆
SilicateMonoclinicMohs 6.5–7
Kyanite specimen
Kyanite Al₂OSiO₄
SilicateTriclinicMohs 5.5–7
Lazulite specimen
Lazulite MgAl₂(PO₄)₂(OH)₂
PhosphateMonoclinicMohs 5.5–6
Lazurite specimen
Lazurite Na₇Ca(Al₆Si₆O₂₄)(SO₄)(S₃)¹⁻·H₂O
SilicateCubicMohs 5–5.5
VarietyMorganite specimen
Morganite Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
VarietyMoss Agate specimen
Moss Agate SiO₂
SilicateTrigonalMohs 7
VarietyNephrite specimen
Nephrite Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
SilicateMonoclinicMohs 6–6.5
VarietyOnyx specimen
Onyx SiO₂
SilicateTrigonalMohs 7
Painite specimen
Painite CaZrAl₉O₁₅(BO₃)
BorateHexagonalMohs 8
MineraloidPearl specimen
Pearl Aragonite + conchiolin
CarbonateOrthorhombicMohs 2.5–4.5
Petalite specimen
Petalite LiAlSi₄O₁₀
SilicateMonoclinicMohs 6–6.5
Pezzottaite specimen
Pezzottaite CsLiBe₂Al₂Si₆O₁₈
SilicateHexagonalMohs 8
Phenakite specimen
Phenakite Be₂(SiO₄)
SilicateHexagonalMohs 7.5–8
Phosphophyllite specimen
Phosphophyllite Zn₂Fe²⁺(PO₄)₂·4H₂O
PhosphateMonoclinicMohs 3–3.5
VarietyPrasiolite specimen
Prasiolite SiO₂
SilicateTrigonalMohs 7
Pyrope specimen
Pyrope Mg₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
VarietyRed Beryl specimen
Red Beryl Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
Rhodizite specimen
Rhodizite KBe₄Al₄(B₁₁Be)O₂₈
Oxides & HydroxideCubicMohs 8
VarietyRhodolite specimen
Rhodolite (Mg,Fe)₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
Sapphirine specimen
Sapphirine Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]
SilicateMonoclinicMohs 7.5
VarietySard specimen
Sard SiO₂
SilicateTrigonalMohs 7
VarietySardonyx specimen
Sardonyx SiO₂
SilicateTrigonalMohs 7
GroupScapolite specimen
Scapolite Marialite–meionite series
SilicateTetragonalMohs 5.5–6
Schorl specimen
Schorl NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
SilicateHexagonalMohs 7–7.5
Serendibite specimen
Serendibite Ca₄[Mg₆Al₆]O₄[Si₆B₃Al₃O₃₆]
SilicateTriclinicMohs 6.5–7
Sinhalite specimen
Sinhalite MgAl(BO₄)
BorateOrthorhombicMohs 6.5–7
Spessartine specimen
Spessartine Mn²⁺₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
Spinel specimen
Spinel MgAl₂O₄
Oxides & HydroxideCubicMohs 7.5–8
Sugilite specimen
Sugilite KNa₂Fe³⁺₂(Li₃Si₁₂)O₃₀
SilicateHexagonalMohs 6–6.5
VarietySunstone specimen
Sunstone (Ca,Na)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
VarietyThulite specimen
Thulite Ca₂Al₃(SiO₄)₃(OH)
SilicateOrthorhombicMohs 6–7
VarietyTiger's Eye specimen
Tiger's Eye SiO₂
SilicateTrigonalMohs 7
Titanite specimen
Titanite CaTi(SiO₄)O
SilicateMonoclinicMohs 5–5.5
VarietyTsavorite specimen
Tsavorite Ca₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
Uvarovite specimen
Uvarovite Ca₃Cr₂(SiO₄)₃
SilicateCubicMohs 6.5–7.5
Variscite specimen
Variscite Al(PO₄)·2H₂O
PhosphateOrthorhombicMohs 3.5–4.5
Vesuvianite specimen
Vesuvianite (Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀
SilicateTetragonalMohs 6.5
Zoisite specimen
Zoisite Ca₂Al₃[Si₂O₇][SiO₄]O(OH)
SilicateOrthorhombicMohs 6–7