Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Pyrite

Iron Disulfide (FeS2)

Gold Ore

Native Gold (Au) in Matrix

Ruby (Corundum)

Al2O3 (Aluminium oxide with Chromium impurities)

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Orthoclase (Potassium Feldspar)

KAlSi3O8 (Potassium Aluminum Silicate)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Quartz (Milky or Rough Quartz)

Silicon Dioxide (SiO2)

Quartz / Common Opal Transition

Silicon Dioxide (SiO2)

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mineral (specifically a cryptocrystalline variety of Quartz)

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Bloodstone (also known as Heliotrope)

Silicon Dioxide (SiO2) - variety of Chalcedony

igneous, sedimentary, metamorphic, and mineral

Coquina

Bioclastic Limestone (composed of CaCO3)

sedimentary

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

Ruby

Corundum (Al2O3:Cr)

Quartzite

Quartzite (SiO2)

Moonstone (bead form)

Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar

Smoky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Amber and Citrine Quartz

Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Hematite (Iron Ore)

Hematite (Fe2O3)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz / Clear Quartz

Silicon Dioxide (SiO2)

Sunstone

Oligoclase or Andesine (Labradorite) Feldspar (Na,Ca)(Si,Al)4O8

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Quartz (Clear/White)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Banded Chalcedony (Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

sedimentary

Coquina

Bioclastic Limestone (Calcium Carbonate, CaCO3)

sedimentary

Banded Agate (specifically Moss Agate or Plume Agate variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Lapis Lazuli

Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Quartz / Quartzite

Silicon Dioxide (SiO2)

mineral / metamorphic

Calcite

Calcite (Mineral; CaCO₃)