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

Diamond (or Diamond Simulant/Cubic Zirconia)

Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia

Wishing Stone (Graywacke with Quartz Vein)

Graywacke (immature sandstone) with a SiO2 (Quartz) intrusion

Quartzite

Quartzite (primarily SiO2)

Jasper (Mookaite variety likely)

Silicon Dioxide (SiO2) with iron oxide inclusions

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

White Topaz

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

Calcite (or Alabaster, if truly carved)

Calcium Carbonate (CaCO3)

Conglomerate

Conglomerate rock

Wishing Stone (Quartz-veined Siltstone or Graywacke)

Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)

Zoisite with Ruby (Anyolite)

Anyolite (Ca2Al3(SiO4)3(OH) + (Hb, Al, Cr)2O3)

Pumice

Pumice (a highly vesicular volcanic glass)

Ferruginous Sandstone with Ironstone Concretion

Goethite-rich Sandstone (FeO(OH))

Agate (Common Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)

Orange Quartzite (River Pebble)

Quartzite (SiO2 with iron oxide inclusions)

Ironstone Nodules / Siderite Concretion

Siderite (FeCO3) / Ferruginous Septarian Concretion

Sandstone (likely Iron-rich or Arkosic)

Arenite (SiO2 with FeO(OH) or Fe2O3 staining)

Quartz Vein in Sedimentary Rock

Silicon Dioxide (SiO2) with host Chert or Limestone

Quartzite (River Pebble)

Meta-quartzite (composed primarily of SiO2)

Epidote in Granite Gneiss

Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))

Pumice

Pumice (Highly vesicular volcanic glass)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Marble

Metamorphosed Limestone (calcite formulation CaCO3)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Aquamarine

Beryl (Be3Al2Si6O18)

Jasper (Red Jasper)

Jasper (Silicon Dioxide, SiO2)

Chert (Flint Nodular Variety)

Microcrystalline Quartz (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Schist (Chlorite or Mica-rich)

Chlorite Schist

Quartzite Pebble

Quartzite (primarily SiO2)

Jasper-Quartz Conglomerate / Chert

Siliceous Sedimentary Rock (SiO2)

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Red Sandstone

Arenite (primarily Quartz with Iron Oxide)

Quartz with Mica (Schist/Pegmatite fragment)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Sandstone

Arenite (SiO2 primarily)

Sandstone

Arenite (primarily SiO2)

Basalt with Quartz/Calcite Veins

Amygdaloidal Basalt (SiO2 or CaCO3 inclusions)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Quartzite

Quartzite (SiO2)

River Chalcedony / Agate

Chalcedony (Silicon Dioxide, SiO2)

Garnet Schist

Garnetiferous Mica Schist

Sandstone (Quartzose Sandstone)

Arenite (SiO2)