Gemstone

Diamond (in Jewelry Setting)

Carbon (C)

Diamond

Carbon (C)

Amber

Fossilized Tree Resin

Rainbow Moonstone

White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Quartz/Schist

Morganite and Aquamarine (Beryl) Bracelet

Beryllium aluminum silicate, Be3Al2(SiO3)6

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Agate

Silicon dioxide (SiO2)

White Buffalo Turquoise (or Howlite/Magnesite)

Calcite/Dolomite or Magnesite with Chert/Quartz inclusions

Larimar

NaCa2Si3O8(OH)

Chrysocolla in Quartz

Chrysocolla (Cu,Al)2H2Si2O5(OH)4·nH2O in Quartz (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Blue Sapphire (likely lab-grown or treated)

Corundum (Aluminum Oxide, Al2O3)

Turquoise

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

Emerald

Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.

Amethyst (Pale/Light Variety)

Quartz (Silicon Dioxide) with Iron impurities - SiO2

Moonstone

Orthoclase (KAlSi3O8) with Albite inclusions

Cordierite in Matrix (Iolite)

Magnesium iron aluminium cyclosilicate (Mg,Fe)2Al4Si5O18

Turquoise

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

Carnelian Agate

Silicon dioxide (SiO2) - Chalcedony variety

Olivine (Peridot)

Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Milky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Limonite inclusions)

Rhyolite (Leopard Skin Jasper)

Rhyolite (Silicon Dioxide with impurities)

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Tiger Iron

Tiger Iron (Hematite, Red Jasper, and Tiger's Eye)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Diamond (Cluster Ring)

Carbon (C)

Rhodonite

Rhodonite (Mn,Fe,Mg,Ca)SiO3

Serpentine (Serpentinite)

Antigorite, Lizardite, or Chrysotile; (Mg,Fe)3Si2O5(OH)4

Amber

Succinite (C10H16O)

Beryl (likely Emerald or Aquamarine in matrix)

Beryllium aluminum silicate (Be3Al2Si6O18)

Tiger's Eye

Silicon Dioxide (SiO2) with Limonite/Goethite inclusions

Diamond

Native Carbon (C)

Jasper

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Amethyst

Amethyst (Silicon Dioxide - SiO2 with Iron impurities)

Almandine Garnet (weathered)

Almandine (Fe3Al2(SiO4)3)

Red Coral (with Hematite and Black Pearl accents)

Corallium rubrum (Calcium Carbonate, CaCO3)

Garnet and Quartz

Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)