Metamorphic And Mineral

Quartz (specifically Milky/Gray Quartz)

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Blue Quartzite (River Pebble)

Quartzite (primarily SiO2 with Dumortierite or Crocidolite inclusions)

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Tiger's Eye (Tumbled Blue/Black-Golden variety)

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)

Pebble

Clast (specifically a granule or small pebble)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Mica Schist

Medium-grade regional metamorphic rock (composition varies)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Blue Quartzite

Quartzite (specifically a variety enriched with blue-coloring minerals)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety with hematite or goethite inclusions) Chemical Formula: (Ca,Na)(Al,Si)2Si2O8

Jadeite

Jadeite (NaAlSi2O6)

Gneiss (specifically a water-worn pebble)

Gneiss

Emerald in Matrix

Emerald (Beryllium Aluminum Silicate), Be3Al2(SiO3)6

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium

Peach Moonstone

Orthoclase Feldspar (KAlSi3O8)

Sodalite (blue beads) and Clear Quartz (clear beads)

Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

River Quartz Pitting/Cobble

Silicon Dioxide (SiO2)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (with Iron staining)

Silicon Dioxide (SiO2)

Agate

Silicon Dioxide (SiO2) - Chalcedony variant

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Rough Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Quartz (Peach/Orange variety)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Orange Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Amethyst (Raw Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Ruby

Corundum (Al2O3 with Chromium)

Calcite

Calcium Carbonate (CaCO3)

Quartz (Milky/River Quartz)

Silicon Dioxide (SiO2)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2(SiO3)6) with chromium/vanadium traces

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Sunstone

Aventurine Feldspar (Plagioclase Feldspar with inclusions)