Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (Basalt) with CaCO3

igneous

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

sedimentary

Chert (Black Chert)

Microcrystalline Silica (SiO2)

sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

sedimentary

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

sedimentary

Rose Quartz

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

mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

mineral

Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

metamorphic

Chert (Jasper/Chalcedony variety)

Microcrystalline Quartz (SiO2)

sedimentary

Chert (Jasper/Opaline variety)

Silicon Dioxide (SiO2)

sedimentary

Basalt (River Pebble)

Basalt

igneous

Basalt River Cobble

Basalt (Mafic Igneous Rock)

igneous

Citrine

Citrine (Silicon Dioxide, SiO2)

mineral

Selenite (Satin Spar)

Gypsum (CaSO4·2H2O)

mineral

Rose Quartz

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

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron inclusions

sedimentary

Quartz Geode (Druzy)

Crystalline Silicon Dioxide (SiO2)

mineral

Amethyst Geode

Silicon Dioxide with impurities (SiO2)

mineral

Chrysocolla (with Quartz and Azurite)

Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]

mineral

Granite

Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)

igneous

Granite

Phaneritic Plutonic Felsic Rock

igneous

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

igneous

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary

Serpentine

Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)

metamorphic

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Opalite

Synthetic Glass (Simulated Opal)

mineral

Pyrite

Iron Sulfide (FeS2)

mineral

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

igneous

Gneiss

Gneiss (High-grade Metamorphic Rock)

metamorphic

Tiger's Eye

SiO2 (Pseudomorph of Quartz after Crocidolite)

metamorphic

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

sedimentary

River Cobble (likely Quartzite)

Metamorphosed Sandstone (SiO2)

metamorphic

Limestone

Calcium carbonate (CaCO3)

sedimentary

Limestone

Calcium carbonate (CaCO3)

sedimentary

Basalt

Basalt

igneous

Opalite

Man-made glass (traditionally simulated Opal)

mineral

Vesicular Basalt (or Scoria)

Vesicular Basalt (Aphanitic-vesicular volcanic rock)

igneous