Mineral

Yellow Topaz (Imperial or Precious Topaz)

Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)

Ferruginous Quartz

Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Nuummite

Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Pallasite Meteorite

Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)

Lace Agate (specifically Red Lace Agate)

Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz

Yellow Jasper

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Snowflake Obsidian

Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Blue Chalcedony

Chalcedony (a cryptocrystalline variety of Quartz - SiO₂)

Yellow Quartz (Citrine/Lemon Quartz)

Silicon Dioxide (SiO2)

Malachite in Matrix

Copper Carbonate Hydroxide (Cu2CO3(OH)2)

Mookaite Jasper

Silicified Radiolarite (SiO2 with impurities)

Tiger's Eye

Tiger's Eye (Pseudomorph of Quartz after Crocidolite), SiO2

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Citrine or Iron-Stained variety)

Silicon Dioxide (SiO2)

Amethyst

Silicon Dioxide (SiO2) containing Iron impurities

Nuummite

Nuummite (ortho-amphibole rock)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Fuchsite (Green Muscovite)

K(Al,Cr)2(AlSi3O10)(OH)2

Amethyst (Rose-tinted/Pale variety)

Silicon Dioxide (SiO2) with iron impurities

Milky Quartz

Silicon Dioxide (SiO2)

Morganite (Pink Beryl)

Beryllium aluminum silicate Be3Al2(SiO3)6

Amazonite with Smoky Quartz and Feldspar

Microcline (KAlSi3O8) with Quartz (SiO2)

Tiger's Eye

Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite

Blue Lace Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Chlorastrolite (Greenstone)

Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O

Native Copper

Native Copper (Cu)

Gold Nugget

Native Gold (Au)

Thunderegg (Agetized Geode nodule)

Rhyolitic Agate Nodule (SiO2 filling volcanic cavities)

Sunstone

Aventurine Feldspar (Plagioclase Feldspar with inclusions)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Red Beryl

Bixbite (Be3Al2Si6O18 with Mn3+ ions)

Common Opal

Hydrated silica (SiO2 " nH2O)