Metamorphic Or Igneous With Mineral Inclusion

Quartz with Mica inclusions (likely Schist or Gneiss host)

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

Green Aventurine

Silicon Dioxide (SiO2) with Chromium-rich Fuchsite mica

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Quartz with Schist Inclusion

Quartz (SiO2) with micaceous schist inclusions

Rose Quartz

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

Quartz-rich metamorphic rock (probable quartzite)

Quartzite; predominantly crystalline SiO₂, with possible mica and iron-oxide impurities

Raw quartz crystal fragment

Quartz (silicon dioxide, SiO₂), likely iron-stained or included quartz

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartzite river stone

Quartzite (SiO2)

Gold-bearing Quartz

Auriferous Quartz (SiO2 with Native Gold inclusion)

Sunstone Quartz / Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions

Quartz-rich pegmatite with mica and dark inclusions

Pegmatite; chiefly quartz (SiO₂), with feldspar and biotite/tourmaline inclusions

Ruby (Cabochon)

Corundum (Al2O3)

Yellow Aventurine

Silicon Dioxide (SiO2) with inclusion of Mica

Quartzite with inclusions

Quartzite (primarily SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Weathered basalt pebble (likely vesicular basalt)

Basalt, chiefly plagioclase feldspar and pyroxene, with possible olivine and iron oxides

Milky Quartz

SiO2

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Quartz with Mineral Inclusions

Silicon Dioxide (SiO2) with accessory minerals

Strawberry Quartz (Aventurine)

Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)

Strawberry Quartz

Quartz with Hematite inclusions (SiO2 + Fe2O3)

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); visual identification is uncertain because the stone is heavily faceted and photographed with flash

Quartz-rich pebble

Mostly quartz (SiO₂), possibly a quartzite or vein-quartz fragment

Quartz crystal fragment (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Likely rough quartz with iron-oxide staining

Quartz (SiO₂), possibly with iron-oxide inclusions or surface staining

Blue Quartz with Graphite/Tourmaline Inclusions

Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements

Granite / Quartz with Mica inclusion

Granite (Plutonic Igneous Rock)

Obsidian (likely snowflake or sheen obsidian)

Volcanic glass, predominantly silica-rich rhyolitic composition (approximately 70–75% SiO₂)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Blue Calcite

Calcium Carbonate (CaCO3)

Milky Quartz with Inclusions

Silicon Dioxide (SiO2) with mineral inclusions

Green Moss Agate (Tumbled)

Silicon Dioxide (SiO2) with mineral inclusions

Picture Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Fancy Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Leopard Skin Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Leopard Skin Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Pink Mimbres Agate / Plume Agate

Silicon dioxide (SiO2) with mineral inclusions

Jasper with Purple Fluorite or Chalcedony

Silicon Dioxide (SiO2) with mineral inclusions

Tumbled Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Garden Quartz (Lodalite)

Silicon Dioxide (SiO2) with mineral inclusions

Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions