Mineral (Specifically A Mineraloid)

Turquoise (Rough Specimens)

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

Petrified Wood

Silicified Wood (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Chalcedony (Agate and Carnelian varieties)

Silicon Dioxide (SiO2)

Blue Lace Agate

Silicon Dioxide (SiO₂), a variety of Chalcedony

Red Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Larimar

Pectolite (NaCa2Si3O8(OH))

Carnelian Agate

Silicon Dioxide (SiO2) with Iron Impurities

Amethyst Quartz (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities

Honey Calcite Sphere

Calcium Carbonate (CaCO3)

Yellow Calcite

Calcium Carbonate (CaCO3)

Pink Granite

Granite (rich in Potassium Feldspar/Orthoclase)

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Labradorite (specifically Larvikite beads)

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

Brecciated Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite

Chalcedony (specifically Agate and Carnelian variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Quartz (specifically Quartzite or Massive Quartz)

Silicon Dioxide (SiO2)

Cullet (Slag Glass)

Amorphous Silica (SiO2) with various metal oxide colorants

Amber

Succinite (specific to Baltic amber), fossilized tree resin

Rose Quartz

SiO2 (Silicon Dioxide)

Agate (specifically Waterline or Onyx-type Agate)

Silicon Dioxide (SiO2) - variety Chalcedony

Jasper (specifically Polychrome or Desert Jasper)

Silicon Dioxide with impurities (SiO2)

Marble

Recrystallized Calcite (CaCO3) Rock

Rough Rose Quartz

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

Yellow Quartz (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Bicolor Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Chalcedony (specifically Agate or Carnelian variety)

Cryptocrystalline Silica (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Citrine (Yellow Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz on Matrix

Crystalline Silicon Dioxide (SiO2)

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

Amazonite

Potassium feldspar (Microcline) - K(AlSi3O8)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)

Granite (specifically Pink or Alkali Feldspar Granite)

Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)

Amethyst on Basalt

Silicon dioxide (SiO2) with trace Iron

Yellow Quartz (Polished)

Silicon Dioxide (SiO2) with iron inclusions

Citrine Quartz

Silicon Dioxide (SiO2) - Ferric Iron impurities

Aquamarine

Beryl (Be3Al2Si6O18)

Pink Granite

Granite (Phaneritic Felsic Igneous Rock)