Mineral With Metamorphic Or Igneous Host

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Quartz vein in foliated metamorphic rock

Likely quartz-bearing schist or gneiss; visible crystal is quartz (SiO₂)

Garnet (likely Almandine or Pyrope)

Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3

Likely garnet crystal fragment

Garnet-group mineral, possibly almandine (Fe₃Al₂(SiO₄)₃)

Chrysocolla (on host rock)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)

Raw greenish crystal/mineral fragment

Uncertain from image; possibly olivine (forsterite-rich), epidote, or green tourmaline

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(F,OH)2

Emerald in Matrix

Beryl (Be3Al2Si6O18)

Quartz (Druzy) on Matrix

Silicon Dioxide (SiO2)

Emerald in Matrix (Quartz/Schist)

Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities

Likely milky quartz fragment

Quartz (SiO₂)

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with iron impurities

Milky quartz (iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Weathered schist or gneiss cobble

Foliated silicate rock, likely mica schist or biotite gneiss

Tumbled green aventurine (probable)

Quartz aggregate, predominantly SiO₂, with green fuchsite mica inclusions

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Green Aventurine (Carved)

Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)

Milky quartz vein in altered host rock

Quartz (SiO₂), likely with feldspar, mica, and iron-oxide alteration

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Quartz with Host Rock Matrix

Silicon Dioxide (SiO2)

Aventurine (Green Aventurine)

Silicon Dioxide with Fuchsite inclusions (SiO2)

Likely garnet gemstone

Garnet-group silicate; species cannot be determined from the photo (common red varieties include almandine, Fe₃Al₂(SiO₄)₃, and pyrope, Mg₃Al₂(SiO₄)₃).

Quartz-bearing rock fragment

Likely milky quartz with iron-oxide staining and possible host-rock minerals; exact identification is uncertain from the image.

Quartz Vein / Quartzite with Iron Oxide Staining

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz on Host Rock

Silicon Dioxide (SiO2)

Epidote-bearing Rock / Epidote Inclusion

Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) in host rock

Yellow Sapphire

Corundum (Al2O3) with iron impurities

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2) within Sedimentary or Igneous host

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble with Host Rock / Schist Matrix

Silicon Dioxide (SiO2) with Metamorphic Host Rock

Garnet-bearing metamorphic rock, likely garnet schist or amphibolite

Almandine garnet (Fe₃Al₂Si₃O₁₂) in mica- or amphibole-rich matrix

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) with host rock (often Schist or Basalt)

Pegmatite (Granitic Pegmatite with Quartz, Mica, and Tourmaline/Biotite)

Pegmatite

Quartz-veined basalt or mafic schist

Basaltic rock dominated by plagioclase–pyroxene minerals, with milky quartz/calcite veins

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

Quartz-rich pegmatite with green epidote or chlorite

Pegmatitic quartz–feldspar rock, likely containing epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH)) and/or chlorite

Quartz with impurities or Host Rock

SiO2 (Silicon Dioxide) with mixed silicates

Biotite in Host Matrix

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)