Mineral (Gemstone Variety Of Beryl)

Quartz

Silicon Dioxide (SiO2)

Green faceted or cabochon gemstone (possibly glass or synthetic)

Undetermined; possibilities include green beryl (Be₃Al₂Si₆O₁₈), quartz (SiO₂), or synthetic glass

Tumbled jasper (likely brecciated or ocean jasper)

Microcrystalline quartz (SiO₂), with iron-oxide staining and possible chalcedony

Rough Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz-rich pegmatite (possibly quartz–feldspar rock)

Granite pegmatite; chiefly quartz (SiO₂) with feldspar and minor mica/iron staining

Granitic Pegmatite

Coarse-grained Granite (KAlSi3O8 + SiO2)

Faceted peridot

Olivine, typically the forsterite–fayalite series; (Mg,Fe)₂SiO₄

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Blue Sapphire

Corundum (Al2O3)

Polished reddish-brown stone bead, possibly jasper

Likely iron-rich microcrystalline quartz (jasper; SiO₂), but the image is not sufficient for a confident identification

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz-rich pegmatite (likely mica-bearing granite)

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica (muscovite/biotite)

Pegmatitic granite

Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica

Quartz-rich pegmatite fragment

Granite/pegmatite; chiefly quartz (SiO₂) and feldspar, with possible biotite or tourmaline

Weathered feldspar-rich pegmatite (likely orthoclase or plagioclase)

Granitic pegmatite; predominantly K-feldspar/plagioclase (KAlSi₃O₈–NaAlSi₃O₈), with quartz and dark mafic minerals

Larimar

Pectolite (NaCa2Si3O8(OH))

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)

Tiger's Eye

Silicon dioxide with crocidolite inclusions (SiO2)

Quartz

Silicon Dioxide (SiO2)

Mica-rich pegmatite

Granitic pegmatite composed mainly of muscovite mica, quartz, and feldspar

Polished smoky quartz pendant (probable)

Quartz, SiO₂; smoky variety

Citrine

Quartz (SiO₂) variety

Quartz

Silicon Dioxide (SiO2)

Jasper

Silicon Dioxide (SiO2)

Rainbow Moonstone with Black Tourmaline

White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Quartz

Silicon Dioxide (SiO2)

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Polished Agate (Yellow/Grey Agate Pendant)

Silicon Dioxide (SiO2)

Quartz-bearing pegmatitic rock, likely granite/pegmatite

Feldspar–quartz pegmatite; chiefly K-feldspar, plagioclase, quartz, and possible mica

Rhodochrosite

Manganese carbonate (MnCO3)

Quartz Mineral

Silicon Dioxide (SiO2)

Granitic Pegmatite (River Rock specimen)

Granite / Pegmatite (composed of SiO2, KAlSi3O8, and NaAlSi3O8)

Milky Quartz

Silicon Dioxide (SiO2)

Mixed Mineral Bead Bracelet

Polycrystalline and Monocrystalline Silicates/Oxides (Quartz, Howlite, Hematite)