Mineral With Metamorphic Or Igneous Host

Quartz-rich pegmatite (possibly quartz–feldspar rock)

Granite pegmatite; chiefly quartz (SiO₂) with feldspar and minor mica/iron staining

Tumbled blue-green stone, likely turquoise or chrysocolla

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; chrysocolla: hydrated copper aluminosilicate

Quartz-rich vein fragment, possibly quartz with mica or calcite

Quartz (SiO₂), with probable muscovite/biotite mica and minor feldspar or calcite

Aquamarine (Beryl) Beads

Beryllium aluminum silicate (Be3Al2Si6O18)

Milky quartz / quartz-rich vein rock

Quartz, silicon dioxide (SiO₂), likely massive quartz with minor iron-staining or feldspar

Milky quartz in weathered host rock

Quartz, silicon dioxide (SiO₂), likely with iron-stained feldspar or altered matrix

Milky quartz-rich rock

Quartz (silicon dioxide, SiO₂), likely massive quartz with minor feldspar or host-rock material

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Milky quartz (likely quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Milky quartz specimen

Quartz (silicon dioxide, SiO₂), commonly massive or drusy quartz

Emerald (or possibly Green Glass / Slag)

Beryl (Be3Al2(SiO3)6)

Quartz vein fragment

Milky quartz (SiO₂), possibly with weathered host rock

Quartz-bearing altered rock

Likely quartz vein in weathered schist or gneiss; quartz is SiO₂

Polished blue apatite tower

Apatite, commonly fluorapatite (Ca₅(PO₄)₃F)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz with iron-oxide staining and matrix

Quartz, silicon dioxide (SiO₂), likely massive quartz

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz vein in dark host rock

Milky quartz (SiO₂) in an unidentified dark metamorphic host, possibly amphibolite or schist

Mica-bearing metamorphic rock, likely schist

Muscovite/biotite mica schist with quartz and feldspar

Wishing Stone (Basalt with Quartz Vein)

Basalt containing a microcrystalline quartz (SiO2) or calcite vein

Blue Dumortierite Quartz

Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)

Quartz Vein in Amphibolite / Gneiss

Quartz (SiO2) in Mafic Metamorphic Host Rock

Rough Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Epidote with Quartz/Feldspar

Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock

Pyrite-bearing quartz vein rock

Pyrite (FeS₂) with quartz (SiO₂), likely in a schistose or altered host rock

Yellow Aventurine (specifically a carved crescent moon)

Silicon Dioxide (SiO2) with inclusions

Quartz-bearing metamorphic rock (likely quartz vein in schist or altered granite)

Quartz (SiO₂) in a mica-rich host rock; exact identification requires testing

Quartz-bearing rock or quartz-rich mineral specimen

Quartz, silicon dioxide (SiO₂); exact host rock is uncertain from the image

Red Aventurine (Strawberry Quartz / Sunstone Quartz)

Silicon Dioxide with Hematite/Goethite inclusions (SiO2)

Orange Aventurine / Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Copper-bearing Quartz Vein in Host Rock

Quartz with Malachite/Chrysocolla staining

Greenstone

Greenschist (Metamorphosed Mafic Rock)

Likely magnetite-rich rock (lodestone)

Magnetite, Fe₃O₄, possibly in a fine-grained host rock

Pebble with dark mineral inclusion

Likely granitic or gneissic quartz–feldspar pebble with a mafic inclusion; exact identification requires testing

Greenstone

Metabasalt

Likely quartz-rich mineral fragment

Quartz (SiO₂), possibly iron-stained or included quartz

Sapphire (Blue/Violet Rough)

Corundum (Al2O3)

Black Onyx

Silicon Dioxide (SiO2) with parallel banding

Likely rough garnet

Garnet group, possibly almandine (Fe₃Al₂(SiO₄)₃); identification is uncertain from the image

White quartz-rich pebble, possibly milky quartz

Quartz (silicon dioxide, SiO₂), likely massive milky quartz

Quartz-veined Metamorphic Rock

Quartz-veined Schist or Gneiss