Mineral (Silicate Variety)

Nephrite Jade

Nephrite

Yellow Jade

Jadeite or Nephrite (various silicates)

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Rough Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Jasper

Silicon Dioxide (SiO2) - Impure Variety of Chert

Zebra marble

Banded calcite marble, commonly called zebra marble; chiefly calcite (CaCO₃), sometimes with dolomite and dark silicate or carbonaceous minerals

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Small pink mineral fragment

Indeterminate; possibly rose quartz or feldspar

Sandstone

Arenite (SiO2 predominantly)

Polished brown jasper or brecciated jasper

Microcrystalline quartz (SiO₂), commonly mixed with iron oxides and other silicates

Garnet

Garnet Group (Silicate Minerals)

Jasper

Silicon dioxide (SiO2)

Olivine in Basalt matrix

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Polished/tumbled banded marble or calc-silicate rock

Foliated calcitic marble, possibly serpentinite-bearing; primarily calcite (CaCO₃) with gray silicate minerals

Blue Topaz

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Jasper (specifically Fancy Jasper or Bloodstone variety)

Silicon Dioxide (SiO2) with impurities (Iron oxides/silicates)

Polished jasper or jasper-rich breccia

Microcrystalline quartz (SiO₂), commonly with iron oxides and other silicates

Likely polished garnet

Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)

Black Tourmaline (Schorl)

Sodium Iron Aluminum Borate Silicate (NaFe3Al6(BO3)3Si6O18(OH)4)

Serafina (Serafinite / Clinochlore)

Clinochlore (Mg5Al)(AlSi3O10)(OH)8

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities such as Fe2O3

Polished yellow jasper

Jasper, microcrystalline quartz (SiO₂), commonly containing iron oxides and other silicates

Green Banded Chert (Agate/Jasper)

Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite

Polished/tumbled brecciated jasper (likely rainforest or ocean jasper)

Microcrystalline quartz (SiO₂), commonly mixed with chalcedony, iron oxides, and other silicates

Red Garnet

Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Polished ocean jasper (likely orbicular jasper)

Microcrystalline quartz (chalcedony), SiO₂, with iron oxides and other silicates

Basalt

Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)

Tumbled chert or jasper pebble

Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper

Polished banded jasper (likely ocean jasper or brecciated jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron oxides and assorted silicate inclusions

Chrysoprase

Chalcedony (Silicon Dioxide, SiO2)

Zebra Jasper (Zebra Stone)

Tumbled Silicon Dioxide (SiO2) with impurities

Green Jasper with Quartz veins

Jasper (Silicon Dioxide, SiO2)

Tourmalinated Quartz or Schorl

Silicate mineral, specifically Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4) or dark Tourmaline crystal cluster

Garnet (almandine or pyrope variety)

Silicate mineral Group: (Fe, Mg, Mn, Ca)3(Al, Fe, Cr)2(SiO4)3

Gneiss

Gneiss (foliated metamorphic rock)

Mixed rock and mineral specimen collection

Varied silicate, carbonate, and oxide minerals; individual identification is not possible from this group photograph

Quartz Pebble

Silicon Dioxide (SiO2)

Labradorite

(Ca, Na)(Al, Si)4O8 (Calcium Sodium Aluminum Silicate)

Vesuvianite (Idocrase)

Ca19(Al, Mg, Fe)13(SiO4)10(Si2O7)4(OH, F, O)10

River Jasper (Green Jasper)

Silicon Dioxide (SiO2) with impurities