Metamorphic Or Mineral

Staurolite

Staurolite (Fe2+2Al9Si4O23(OH))

Mica Schist / Granite

Mica Schist (Silicate metamorphic rock)

Garnet-bearing metamorphic rock, likely garnet schist or amphibolite

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

Unakite Epidote-Granite

Unakite (Epidotized Granite)

Gneiss

Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)

Raw reddish-brown mineral specimen, possibly garnet

Garnet-group silicate, commonly almandine (Fe₃Al₂Si₃O₁₂); identification is uncertain from the blurred image

Pyrite-bearing rock, possibly pyrite schist or sulfide ore

Pyrite (iron disulfide, FeS₂), likely intergrown with dark metamorphic host minerals

Iron-stained quartz vein fragment

Quartz (SiO₂), likely with limonite/goethite iron oxides and minor sulfides

Kyanite

Kyanite (Al2SiO5)

Tumbled epidote-bearing rock (likely epidote–quartz–feldspar aggregate)

Epidote-rich metamorphic rock; minerals likely epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH), quartz, feldspar, and dark amphibole/biotite)

Dark mafic rock fragments, possibly basalt

Basalt (fine-grained plagioclase–pyroxene rock), tentative

Quartz Vein in Host Rock (Gneiss/Schist)

Silicon Dioxide (SiO2) within a metamorphic matrix

Milky quartz vein fragment

Quartz (silicon dioxide, SiO₂), likely with iron-oxide staining and minor host rock

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Quartz / Quartzite

Silicon Dioxide (SiO2)

Tiger's Eye and Carnelian Quartz

Silicon Dioxide (SiO2)

Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Copper-bearing Quartz Vein in Host Rock

Quartz with Malachite/Chrysocolla staining

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Fuchsite in Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

Stichtite in Serpentine (Atlantasite)

Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with included minerals (Fuchsite for green)

Mixed Tumbled Gemstones and River Rocks

Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)

Wishing Rock (Quartz Vein in Host Rock)

Silicon dioxide (SiO2) vein in various host rocks

Quartz fragment

Quartz (silicon dioxide, SiO₂)

Tumbled cream-colored quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Tumbled green aventurine (likely)

Quartz (SiO₂) with fuchsite or other mica inclusions

Tumbled milky quartz pebble

Quartz, silicon dioxide (SiO₂)

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Tiny rounded metallic-looking pebble, possibly pyrite or a metal-rich mineral

Uncertain from image; possible pyrite (FeS₂), chalcopyrite (CuFeS₂), or magnetite (Fe₃O₄)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Vesicular basalt with secondary mineralization

Mafic volcanic rock, chiefly plagioclase and pyroxene, with iron oxides and likely zeolite/calcite infillings

Likely weathered granite or granitic pegmatite

Granite; chiefly quartz (SiO₂), feldspar, and mica

Milky quartz pebble

Quartz (SiO₂), likely massive or microcrystalline quartz

Milky quartz vein rock

Quartz (SiO₂), likely in a quartz-rich host rock with minor iron-stained minerals

Unidentifiable Specimen

Undetermined

Nephrite Jade

Nephrite

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))