Organic Gemstone

Chert (specifically Jasper/Flint)

Chert (SiO2)

Ruby

Corundum (Al2O3 with Chromium traces)

Citrine Quartz

Silicon Dioxide (SiO2)

Hemimorphite on Limonite Gossan

Hemimorphite (Zn4Si2O7(OH)2·H2O) on Limonite matrix

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky or Citrine-leaning)

Silicon Dioxide (SiO2)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Sodalite

Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

Raw Emerald

Beryl (Be3Al2(SiO3)6) with Cr/V impurities

Rose Quartz

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

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

Blue Chalcedony

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Azurite and Malachite on Matrix

Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Amazonite

Microcline (KAlSi3O8)

Red Carnelian

Carnelian (Silicon Dioxide - SiO2)

Jasper

Silicon dioxide (SiO2) with iron oxide impurities

Labradorite

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

Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Lavender Jade (Jadeite)

Jadeite - Sodium Aluminum Silicate (NaAlSi2O6)

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Carnelian

Carnelian (variety of Chalcedony, SiO2 with iron oxide impurities)

Fire Agate

Chalcedony (Silicon Dioxide, SiO2) with Limonite/Goethite

Carnelian

Carnelian (SiO2 - Silicon Dioxide with Iron Oxide impurities)

Fancy Jasper

Silicon Dioxide (SiO₂)

Yellow Quartz (Citrinated Quartz)

Silicon Dioxide (SiO2)

White Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Carnelian

Carnelian (Silicon Dioxide, SiO2)

Rose Quartz

SiO2 (Silicon Dioxide with trace inclusions)

Milky Quartz

Silicon Dioxide (SiO2)

Mixed Gemstone Beaded Jewelry

Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)

Garnet-Bearing Schist

Almandine Garnet Micaceous Schist

Turquoise

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

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Tektite (Indochinite)

Tektite (SiO2 + Al2O3, Glassy Melts)