Metamorphic Or Sedimentary Depending On Local Grade

Parti Sapphire

Corundum (Al2O3)

Unakite

Unakite (Epidote-Feldspar rock)

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Anthracite Coal

Anthracite (high-rank coal)

Anthracite Coal

Anthracite (Carbon)

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Amethyst

Quartz (Silicon Dioxide, SiO2) with iron impurities

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Blue Kyanite in Quartz

Kyanite (Al2SiO5)

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Ruby in Zoisite with Hornblende

Anyolite (Ruby: Al2O3, Zoisite: Ca2Al3(SiO4)3(OH))

Ruby

Corundum (Al2O3 with Chromium impurities)

Anthracite Coal

Anthracite C

Green Tourmaline (Verdelite)

Tourmaline Group; often Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) or Dravite (NaMg3Al6(BO3)3Si6O18(OH)4)

Green Aventurine

Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.

Amethyst (Faceted)

Silicon Dioxide with Iron impurities (SiO2)

Ruby and Diamond Heart Pendant

Corundum (Al2O3) and Diamond (C)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Greenstone

Greenschist (metamorphosed mafic igneous rock)

Pink Feldspar

Orthoclase (KAlSi3O8) or Microcline

Lapis Lazuli

Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Emerald

Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium

Ruby and Diamond in Gold Setting

Corundum (Al2O3) and Diamond (C)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

Rhodonite beads (possibly dyed or treated, or lower quality Rhodonite)

Manganese inosilicate, (Mn,Fe,Mg,Ca)SiO3

Greywacke (likely)

Greywacke (a type of sandstone)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

Quartz (likely a weathered/tumbled piece)

Quartz (SiO₂)

Unakite

Unakite (Altered Granite consisting of Orthoclase KAlSi3O8, Epidote Ca2(Al,Fe)3(SiO4)3(OH), and Quartz SiO2)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Glaucophane-bearing Schist (Blueschist)

Blueschist (Glaucophane-Lawsonite Schist)

Unakite

Epidotized Granite

Gneiss (likely)

Gneiss

River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)

Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3