Metamorphic Rock (Primarily Composed Of Minerals)

Unakite

Unakite (Epidotized Granite)

Gemstone Sand (Mineral Assortment)

Mixed Mineral Concentrates (Commonly including Quartz SiO2, Garnet X3Y2(SiO4)3, and Tourmaline (Na,Ca)(Li,Mg,Al)3(Al,Fe,Mn)6(BO3)3(Si6O18)(OH,F)4)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions)

Gossan (Iron Hat)

Limonitic Gossan (Fe-oxide/hydroxide complex)

Greenschist

Chlorite schist

Quartzite with Dark Mineral Inclusions

Quartzite (primarily SiO2) with accessory minerals

Breciated Chert

Brecciated Chert (Microcrystalline Quartz, SiO2)

Gneiss with Quartz/Feldspar Vein

Quartz-Feldspathic Gneiss

Quartzite River Rock (with iron staining)

Metamorphosed Sandstone (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Geode with Quartz Crystal Cavity

Silicon Dioxide (SiO2) in Calcareous/Siliceous Matrix

Script Jasper

Silicon Dioxide (SiO2) with impurities

Feldspar (specifically Orthoclase)

Potassium Aluminum Silicate (KAlSi3O8)

Jadeite Jade

Jadeite (NaAlSi2O6)

Jasper

Jasper (Cryptocrystalline Quartz; SiO2)

Blue Dumortierite Quartz

AlAl6BSi3O18 (Dumortierite) within SiO2 (Quartz)

Diorite (River Rock/Cobble)

Intermediate Plutonic Igneous Rock (Diorite)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Limonite (Iron Ore)

FeO(OH)·nH2O

Quartz with Schist Inclusion

Quartz (SiO2) with micaceous schist inclusions

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Dragon Blood Jasper (Lizard Stone/Septarian Chalcedony)

Epidote with Black Hornblende and White Quartz mixture

Gossanous Sandstone (likely Terrestrial)

Arenite with Iron-Oxide inclusions

Clear Quartz

Silicon Dioxide (SiO2)

Mica Schist

Mica Schist

Granite Pebble

Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Hornblende)

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite mica

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Thulite in Matrix

Pink Zoisite - Ca2Al3(SiO4)3(OH)

Jasper Beads (Polished)

Silicon Dioxide (SiO2)

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Potassium Feldspar (Orthoclase)

KAlSi3O8 (Potassium Aluminum Silicate)

Quartz (likely Jasper or Chert variety)

Quartz (SiO₂)

Serpentine Schist with Quartz Vein

Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Garnet (likely Pyrope or Almandine)

Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.

White Jade / Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Chrysocolla in Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix

Pyritic Gneiss

Metamorphic Gneiss with Pyrite inclusions

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Granite

Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions