Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Category
Metamorphic Or Sedimentary
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Quartzite
Quartzite (mainly Silicon Dioxide, SiO2)
metamorphic
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Epidote in Quartz
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) mixed with SiO2
metamorphic
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Mica Schist
Schist (muscovite/biotite rich)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Biotite Schist (with Garnet and Pyrite)
K(Mg,Fe)3AlSi3O10(OH,F)2 (Biotite focus)
metamorphic
Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)
Silicon Dioxide (SiO2)
sedimentary and metamorphic minerals
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Epidotite
Epidotite (Epidote content > 50%)
metamorphic
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Nephrite Jade
Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn%,Fe%,Mg,Ca)SiO₃
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
mineral
Cordierite in Matrix (Iolite)
Magnesium iron aluminium cyclosilicate (Mg,Fe)2Al4Si5O18
metamorphic
Green Quartz / Aventurine
Silicon Dioxide (SiO2) with inclusions
Metamorphic
White Jade (Nephrite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
mineral
River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)
Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)
Sedimentary
Dendritic Agate (or Dendritic Opal)
SiO2 (for Agate), SiO2·nH2O (for Opal)
Mineral
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Epidote (Unakite-related)
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Green Schist
Greenschist
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Schist
Mica Schist
metamorphic
Garnet in Matrix (likely Almandine in Quartz/Mica Schist)
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock
metamorphic
Soapstone and Jade
Steatite (Mg3Si4O10(OH)2) and Nephrite/Jadeite
metamorphic
Hematite (beads)
Hematite (Fe₂O₃)
Mineral
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral