Igneous And Metamorphic Derivative (Weathered)

Biotite Mica in Quartz

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) in Quartz (SiO2)

Quartz (Milky/Rose Quartz variety)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Orthoclase Feldspar with Quartz

Orthoclase (KAlSi3O8)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Yellow Citrine Quartz

Silicon Dioxide (SiO₂)

Yellow Aventurine (specifically a carved crescent moon)

Silicon Dioxide (SiO2) with inclusions

Hematite

Iron(III) oxide (Fe2O3)

Orthoclase Feldspar (Sunstone variety)

KAlSi3O8 (Potassium Aluminum Silicate)

Smoky Quartz (with complementary stones in jewelry setting)

Smoky Quartz (Silicon Dioxide - SiO2)

Citrine

Silicon dioxide (SiO2)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Star Ruby

Corundum (Al2O3 with chromium and rutile inclusions)

Clear Quartz

Silicon Dioxide (SiO2)

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

Quartz (Smoky/Grey variety)

Silicon Dioxide (SiO2)

Sodalite

Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Quartz with Muscovite Mica

SiO2 with KAl2(AlSi3O10)(OH)2

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Ruby in Matrix

Corundum (Al2O3)

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

River Pebble (Greywacke or Basaltic)

Massive Greywacke or Basaltic Andesite

Basalt (Vesicular)

Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)(Si, Al)2O6 with (Ca, Na)(Al, Si)4O8

Pink Garnet (likely Almandine or Rhodolite)

Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)

Black Tourmaline (Schorl)

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Chert (River Pebble)

Microcrystalline silicon dioxide (SiO2)

Dark-colored Igneous Rock (likely Basalt or Diabase)

Basalt (extrusive igneous) or Diabase (intrusive igneous)

Arsenopyrite in Quartz/Host Rock

Arsenopyrite (FeAsS)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Amber Chert (Jasper)

Microcrystalline Quartz (SiO2)

Bauxite

Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)