Metamorphic, Likely Sedimentary With Quartz Veins

Milky quartz (quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Quartz-rich river pebble, possibly quartzite

Quartz (SiO₂); possibly quartzite, a rock composed predominantly of recrystallized quartz

Quartz-rich rock, likely milky quartz or quartz vein fragment

Quartz (silicon dioxide, SiO₂), possibly with minor feldspar or calcite

Milky quartz with iron-oxide staining

Quartz (silicon dioxide, SiO₂), commonly intergrown massive quartz

Clear Quartz (Cut/Faceted Gemstone)

Silicon Dioxide (SiO2)

Iron-stained milky quartz vein

Quartz (SiO₂), with iron-oxide/hydroxide staining and minor dark inclusions

Milky quartz (iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Milky quartz (likely quartzite or massive quartz)

Quartz, SiO₂

Quartz Crystal

Silicon Dioxide (SiO2)

Tumbled Quartz

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (Quartz), SiO2

Milky quartz fragment

Quartz, silicon dioxide (SiO₂)

Quartz-rich pebble, likely milky quartz

Quartz (silicon dioxide, SiO₂), possibly with iron-oxide or feldspar impurities

Milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Quartz Crystal Cluster / Quartzite

Silicon Dioxide (SiO2)

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

Banded Quartzite River Pebble

Metamorphosed Quartz-rich Sandstone (SiO2)

Tumbled quartz (likely smoky or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Milky quartz-bearing rock

Quartz (SiO₂), likely massive quartz with minor iron-oxide inclusions

Quartz-rich breccia (likely silicified fault breccia)

Silica-cemented polymictic breccia; primarily quartz (SiO₂) with possible feldspar, mica, and mafic rock fragments

White quartz bead strand (likely milky quartz)

Quartz, silicon dioxide (SiO₂), crystalline silica

Small white mineral fragment

Indeterminate; possibly quartz, calcite, or feldspar

Milky quartz

Quartz (SiO₂), likely massive milky quartz

Milky quartz (rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Quartz vein rock

Milky quartz with smoky quartz; chiefly silicon dioxide (SiO₂)

Quartz Crystal Rock

Silicon Dioxide (SiO2)

Iron-stained quartz or quartzite pebble

Quartz (SiO₂), possibly quartzite with hematite/goethite staining

Rounded quartz pebble (tentative)

Quartz, silicon dioxide (SiO₂)

Likely quartz-rich rock fragment

Quartz (SiO₂), possibly iron-stained quartz or quartzite

Milky Quartz

Silicon Dioxide (SiO2)

Pale green translucent mineral fragment, likely calcite

Calcite (CaCO₃), tentatively; possibly green fluorite or prehnite

Quartz Crystal Cluster on Matrix

Silicon Dioxide (SiO2)

Clear Quartz

Silicon dioxide (SiO2)

Quartz Crystal Point

Silicon Dioxide (SiO2)

Rounded quartz-rich sandstone cobble

Quartz arenite (sandstone), likely iron-stained

Gneiss (with Quartz-Feldspar vein)

Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)

Iron-stained quartz rock

Quartz (SiO₂), likely ferruginous quartz or quartz-rich breccia

Pyrite-bearing quartz vein rock

Pyrite (FeS₂) with quartz (SiO₂), likely in a schistose or altered host rock

White Quartz

Silicon Dioxide (SiO2)

Weathered quartz-rich pebble

Milky quartz, likely with iron-oxide staining; exact rock type uncertain from image

Tumbled quartz, likely milky quartz

Quartz (silicon dioxide, SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)