Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)

Wishing Stone

Greenschist or Basalt with Quartz/Calcite Vein

Quartz Vein in Matrix

Silicon Dioxide (SiO2)

Quartz Vein in Gneiss or Basalt

Milky Quartz (SiO2) within Metamorphic Host Rock

Granite (possibly granitic gneiss)

Felsic plutonic rock dominated by quartz, K-feldspar, plagioclase, biotite and/or hornblende

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gold Ore (in Quartz/Sulfide matrix)

Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)

Quartz Pebble

Silicon Dioxide (SiO2)

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Chert Breccia (Yellow Jasper)

Silicon Dioxide (SiO2) - Brecciated Chert

Quartzite with Quartz Vein

Metamorphosed Quartz-rich Arenite (SiO2)

River Stone (River Pebble)

Rounded Sedimentary Rock (Lithic Clast)

Milky Quartz Pebble with Iron Inclusions

Silicon Dioxide (SiO2)

Rose Quartz

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

Quartz vein in Host Rock

Crystalline Silicon Dioxide (SiO2) in Lithic Matrix

Banded metamorphic rock, likely gneiss

Biotite–quartz–feldspar gneiss, possibly amphibolite-bearing

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Sandstone (likely Graywacke or Lithic Arenite)

Clastic sedimentary rock predominantly composed of silicate grains

Quartz Vein in Schist / Gneiss

Silicon Dioxide (SiO2) in Metamorphic Matrix

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Pink Granite (with Quartz Vein)

Granite (plutonic felsic igneous rock)

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Jasper-Agate Breccia

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert or chalcedony fragment (possibly agate)

Microcrystalline quartz, SiO₂

Quartz Crystal Cluster on Matrix

Silicon Dioxide (SiO2)

Vein-filled Basalt or Diabase Pebble

Mafic igneous rock with quartz/calcite veins

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities

Tumbled pale stone, likely milky quartz or calcite

Quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly microcrystalline to granular SiO₂, possibly with mica and feldspar

Milky quartz-rich rock

Quartz (silicon dioxide, SiO₂), likely with mica or feldspar inclusions

Quartz Crystal on Matrix

Silicon Dioxide (SiO2)

Quartz (Drusy/Crystalline)

Silicon Dioxide (SiO2)

Quartz with inclusions

SiO2

Chert

Microcrystalline Quartz (SiO2)

Likely quartz crystal fragment

Quartz (SiO₂), possibly a small tumbled or cleaved fragment

Quartzite with Epidote/Chlorite Inclusion

Metamorphic Quartzite (SiO2 with accessory silicate minerals)

Rock Fragment with Calcite/Quartz Vein

Polymictic Rock Fragment (SiO2 / CaCO3)

Shale (possibly Carbonaceous or Oil Shale)

Laminated Mudstone (primarily clay minerals and quartz)

Chert

Microcrystalline Quartz (SiO2)

Quartz

Quartz (SiO2 - Silicon Dioxide)