Metamorphic Rock (Variety Of Quartz)

Quartz-Veined Gneiss or Metamorphic Rock with Quartz Veins

Quartz-veined metamorphic rock (Silicate mineral assemblage)

Quartzite Pebble

Quartzite (SiO2)

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Veined metamorphic cobble, likely serpentinite

Serpentinite, commonly dominated by antigorite/lizardite with magnetite and cross-cutting quartz or calcite veins

Blue Quartzite

Quartzite (primarily SiO2 with inclusions)

White Quartz

Quartz (SiO2)

Small pale stone, likely quartzite or limestone fragment

Indeterminate; possible quartzite (mostly SiO₂) or calcitic limestone (CaCO₃)

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist)

Quartz–feldspar–mica rock; exact identification requires testing

Quartz (Clear or Milky)

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂)

Weathered quartz-rich rock, likely arkose or quartzite

Quartz-dominant siliciclastic rock; probable arkose (quartz + feldspar), possibly weakly metamorphosed quartzite

Gneiss (with Quartz and Mica)

Gneiss

Quartzite (probable)

Quartzite; recrystallized quartz, SiO₂, with minor iron-oxide and possibly feldspar/mica impurities

Quartz with Chlorite inclusions

SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6

Quartz

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz-veined metamorphic rock, likely quartzite or schist

Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO2)

Fuchsite

Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)

Quartz

Silicon Dioxide (SiO2)

Aventurine (likely Green Aventurine)

Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)

Serpentine

Antigorite/Chrysotile group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)

Serpentine

Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Ocean Jasper or Orbicular Jasper

SiO2

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)

Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Mixed gemstones (primarily Silicon Dioxide - SiO2)

Quartz-veined Metamorphic Rock

Quartz-veined Schist or Gneiss

Quartz Geode with Calcite

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)

Quartz Pebble

Silicon Dioxide (SiO2)

Chert / Flint

Microcrystalline Quartz (SiO2)

Mixed tumbled gemstone and mineral lot

Primarily quartz varieties (SiO₂), feldspar, beryl/chalcedony, and other unidentified silicate minerals

Milky Quartz with Chlorite Schist Inclusions

Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)

Polished orbicular jasper (likely leopard-skin or ocean jasper)

Silica-rich microcrystalline quartz/chalcedony, chiefly SiO₂, with iron-oxide and dark mafic inclusions

Iron-Stained Quartzite

Recrystallized Meta-Quartzite (primarily SiO2)

White Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)