Man Made Byproduct (Non Geological)

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Rhodonite in Quartz Matrix

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

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Black Freshwater Pearls

Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3

Limestone

CaCO3 (Mainly Calcite or Aragonite)

Amethyst

Silicon dioxide (SiO2) containing traces of iron and manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartz (likely Rose Quartz or Milky Quartz based on color)

Quartz (SiO2 - Silicon Dioxide)

Green Fluorite

Calcium Fluoride (CaF2)

Plagioclase Feldspar

NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Pyrite (on Quartz/Sulfide matrix)

Iron Sulfide (FeS2)

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Rose Quartz

Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartz

Silicon Dioxide (SiO₂)

Sandstone (Greywacke/Lithic Sandstone)

Arenite / Lithic Sandstone

Orthoclase (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Limestone

Calcium Carbonate (CaCO3)

Pyrite (on Quartz matrix)

Iron Sulfide (FeS2)

Fossiliferous Limestone

Calcite (CaCO3) with Bioclastic inclusions

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (specifically White Chert or Novaculite)

Silicon Dioxide (SiO₂)

Rose Quartz

Silicon Dioxide (SiO2) containing trace amounts of titanium, iron, or manganese

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Fluorite

Calcium Fluoride (CaF2)

Moss Agate and Hematite

Silica (SiO2) with fibrous inclusions of Manganese or Iron; Hematite (Fe2O3)

Moss Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides

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

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

Laterite

Laterite (Iron/Aluminum-rich oxide)

Diamond

Native Carbon (C)

Agate (River Pea)

Microcrystalline Chalcedony (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone

CaCO3 (principally Calcite or Aragonite)

Green Calcite

Calcium Carbonate (CaCO3)