Organic Gemstone (Not A Rock Or Mineral In The Traditional Sense, But Bio Mineralized Material)

Clear Quartz

Silicon Dioxide (SiO2)

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Montana Moss Agate

Chalcedony (SiO2) with Manganese/Iron oxide inclusions

Red Sandstone

Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)

Almandine Garnet in Schist Matrix

Almandine - Fe3Al2(SiO4)3

Amethyst

Silicon Dioxide (SiO2) with trace Iron impurities

Emerald (Rough)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Iolite (Cordierite)

Magnesium Iron Aluminum Silicate (Mg,Fe)2Al4Si5O18

Agate

Agate (Cryptocrystalline Variety of Quartz, SiO2)

Obsidian (in jewelry setting)

Volcanic Glass (Amorphous Silica)

Diamond

Diamond (C)

Garnet-Bearing Gneiss

Almandine-Garnet Gneiss

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Diorite (Salt and Pepper Rock)

Phaneritic Plutonic Diorite (Plagioclase Feldspar + Amphibole/Biotite)

White Topaz

Topaz [Al2SiO4(F,OH)2]

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Amethyst

SiO2 (Silicon Dioxide with Iron impurities)

Tree Agate

Dendritic Agate (Silicon Dioxide, SiO2)

Granite (Weathered)

Phaneritic Plutonic Rock (primarily Quartz, Feldspar, and Mica)

Amber Inlay Jewelry

Fossilized Resin (C10H16O)

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Seraphinite

Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

Larimar

Pectolite (Sodium Calcium Silicate Hydroxide) - (NaCa2(Si3O8)(OH))

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Tiffany Stone

Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Carnelian

Carnelian (Silicon Dioxide, SiO2)

Red Quartz (Ferruginous Quartz)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Turquoise

Hydrous phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Rough Corundum (likely Sapphire/Zircon-bearing)

Aluminium Oxide (Al2O3)

Fire Agate

Silicon Dioxide (SiO2) with layers of Limonite/Goethite

Turquoise

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