Organic (If Resin) Or Synthetic (If Glass); Simulating Sedimentary Or Metamorphic (For Natural Stones)

Bumblebee Jasper (technically a type of Agate/Anhydrite)

Calcite and Anhydrite with inclusions of Realgar and Orpiment (As2S3)

Garnet-bearing Schist

Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist

Rhodonite

Rhodonite (MnSiO3)

Petrified Wood

Silicified wood (Quartz, SiO2)

Granitic Pegmatite

Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Hematite

Hematite (Fe2O3)

Orange Calcite

Calcium Carbonate (CaCO3)

Pearl (nacre)

Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin

Fairy Stone (Staurolite)

Staurolite (Fe2+2Al9Si4O22(OH)2)

Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)

Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Red Jasper

Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions

Rough Garnet (likely Almandine or Pyrope)

Garnet group; Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3

Calcite

Calcite (CaCO3)

Almandine Garnet (weathered)

Almandine (Fe3Al2(SiO4)3)

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (C10H16O)

Rose Quartz with Hematite inclusions

Silicon Dioxide (SiO2) with Fe2O3 inclusions

Gossan (Iron Hat) with Quartz and Chlorite

Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)

Inspirational River Stone (Quartzite)

Metamorphosed Quartz-rich Rock (Quartzite) with SiO2 composition

Red Jasper

Jasper (a variety of Chalcedony, SiO₂ with impurities)

Agate Geode

Cryptocrystalline Quartz (SiO2)

Nephrite Jade

Nephrite

Honey Calcite

Calcium Carbonate (CaCO3)

Quartz Geode (partially formed/chalcedony with iron staining)

Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides

Honey Calcite (Yellow Calcite)

Calcium Carbonate (CaCO3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Bi-Color Tourmaline (or Watermelon Tourmaline)

Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)

Massive Quartz

Silicon Dioxide (SiO2)

Raw Corundum (Sapphire/Ruby variant)

Aluminum oxide (Al2O3)

Granite Pebble (Salt and Pepper Granite)

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Biotite/Amphibole)

Glauconitic Sandstone

Glauconitic Sandstone with high Glauconite concentration ((K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Azurite-Malachite (often a mixed specimen)

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.

Fluorite in Matrix

Fluorite (CaF2) within a host rock matrix

Quartz (milky quartz variety)

Quartz (SiO₂)

Citrine

Silicon Dioxide (SiO2)

Hawk's Eye (Blue Tiger's Eye)

Quartz (fibrous crocidolite variety)

Rutilated Quartz (or Tourmalinated Quartz if inclusions are Tourmaline)

Silicon Dioxide (SiO2) with Rutile (TiO2) or Tourmaline inclusions

Shungite

Non-crystalline carbon (similar to anthracite coal or meta-anthracite)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Faceted Glass (Costume Jewelry)

Amorphous Silicon Dioxide with colorants (Glass)