Mixed (Predominantly Sedimentary And Igneous)

Tiger's Eye (Gold/Brown variety)

Silicon dioxide (SiO2) with fibrous crocidolite inclusions

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Garden Quartz (Phantom Quartz)

Silicon Dioxide (SiO2) with inclusions (Chlorite, Feldspar, Goethite, Hematite)

Carnelian

Silicon Dioxide (SiO2) - variety of Chalcedony

Blue Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of asbestiform silicates)

Yellow Aventurine

Silicon Dioxide (Quartz) with inclusions (SiO2)

Red Beryl

Bixbite (Be3Al2Si6O18 with Mn3+ ions)

Blue Lace Agate (Variety of Chalcedony)

Silicon Dioxide (SiO2)

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Halite (Himalayan Pink Salt)

Halite - NaCl (Sodium Chloride)

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Pyrite

Iron Sulfide (FeS2)

Pyrite and Sunstone

Iron Sulfide (FeS2) and Plagioclase Feldspar ((Ca,Na)Al(Al,Si)Si2O8)

Amber (Black)

Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Dalmatian Jasper / Dalmatian Stone

Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Orca Agate (Chalcedony)

Silicon Dioxide (SiO2) with inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Onyx

Chalcedony (SiO2) with parallel banding

Green Aventurine (Tumbled Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Tiger's Eye (Unpolished)

Pseudomorph of Quartz after Crocidolite (SiO2)

Zebra Jasper (usually a trade name for Serpentine or Basalt blend)

Antigorite/Chrysotile (Serpentine family) - Mg3Si2O5(OH)4

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Tiger's Eye (Rough)

SiO2 (Silicon Dioxide / Pseudomorph of Quartz after Crocidolite)

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite mica; Chemical formula: SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Amber

Succinicum (Organic compound, primarily C10H16O)

Turquoise and Red Coral (with Grizzly Bear Claw)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)

Chlorastrolite (Isle Royale Greenstone)

Chlorastrolite (Pumpellyite-(Mg,Fe2+): Ca2MgAl2(Si2O7)(SiO4)(OH)2∙H2O)

Dalmatian Stone (commonly Dyed)

Dalmatian Jasper (Peralkaline igneous rock)

Dalmatian Stone

Dalmatian Jasper (actually a Peralkaline Igneous Rock)

Amethyst (variety of Quartz)

SiO2 (Silicon Dioxide) with trace iron impurities

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Banded Iron Formation (Jaspilite)

Banded Iron Formation (BIF); predominantly Hematite (Fe2O3) and Magnetite (Fe3O4) with Chert/Jasper (SiO2)

Pyrite

Iron Pyrite (FeS₂)

Dalmatian Stone

Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)

Anthracite Coal

Anthracite

Quartz on Host Rock

Silicon Dioxide (SiO2)

Quartz Geode (with Calcite influence)

Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Agate

Banded Chalcedony (SiO2)