Mineral (Specifically A Gemstone Variety)

Sunstone

Plagioclase Feldspar (specifically Oligoclase variety containing hematite or goethite inclusions)", composition: (Ca,Na)(Al,Si)2Si2O8

Citrine

Silicon dioxide (SiO2)

Granite (specifically Pink or Alkali Feldspar Granite)

Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)

Banded Agate (specifically Sardonyx)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)

Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates

Orange Calcite

Calcium Carbonate (CaCO3)

Serpentine

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Pink Granite

Granite (Phaneritic Felsic Igneous Rock)

Moonstone (specifically Cat's Eye or Gray Moonstone)

Orthoclase (Potassium Aluminum Silicate) with the formula (K,Na)AlSi3O8

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chlorastrolite (Isle Royale Greenstone)

Chlorastrolite (Pumpellyite-(Mg,Al)), formula: Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2∙H2O

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Chert (often called Flint or Chalcedony Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Dalmatian Stone

Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)

Blue Sapphire (in a faceted jewelry setting)

Corundum (Al2O3) with trace Iron and Titanium

Milky Quartz

Silicon Dioxide (SiO2)

Chlorastrolite (Isle Royale Greenstone)

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

Red Agate

Agate (Cryptocrystalline variety of Quartz, SiO2)

Olivine (likely Peridot variety)

Olivine Mineral Group (specifically Forsterite-Fayalite solid solution series); Chemical formula: (Mg,Fe)2SiO4

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Yellow Jasper

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

Montana Moss Agate

Chalcedony (SiO2) with Manganese/Iron oxide inclusions

Sandstone (Graywacke)

Clastic Sedimentary Rock (Lithic Sandstone)

Chert (Tripolitic Chert / Flint Nodules)

Microcrystalline Quartz (SiO2)

Tree Agate (or Moss Agate), faceted into a crystal tower

Dendritic Agate (Silicon Dioxide, SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Amazonite

K(AlSi3O8), Microcline (potassium feldspar)

Blue Calcite

Calcium Carbonate (CaCO3)

Banded Agate (specifically Botryoidal/Orbicular Agate)

Silicon Dioxide (SiO2)

Yellow Jasper

SiO2 (Silicon Dioxide)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Green Jasper

Jasper (variety of Microcrystalline Quartz, SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) - Variety: Chalcedony

Green Chalcedony (likely Green Agate or Chrysoprase)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Ruby

Corundum (Al2O3 with Chromium traces)

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)