Mineral, Often Found As A Rock (Metamorphic)

Yellow Quartz (Chalcedony)

Quartz / Chalcedony (Silicon Dioxide, SiO2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2)

Biotite Schist

Biotite Schist

Smoky Quartz (Rough Specimen)

Silicon Dioxide (SiO2)

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

River/Stream Pebble

Clast / Detrital Grain / Rounded Sedimentary Particle (Compositionally variable, commonly Quartz, Feldspar, Chert, or other resistant rock fragments)

Crushed Stone (Gravel/Aggregates)

Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Sandstone (Red)

Arenite (composed primarily of SiO2)

Granite

Granite

Basalt

Basalt (Mafic volcanic rock)

Sandstone

Sandstone (Silicon Dioxide, SiO2)

Greenschist

Greenschist (comprising Actinolite, Chlorite, and Epidote)

Marble

Recrystallized Calcite Rock (CaCO3)

Milky Quartz (or Iron-Stained Quartz)

Quartz (Silicon Dioxide, SiO2)

Quartz (Iron-stained or Rose variant)

Silicon Dioxide (SiO2)

Quartz Geode (Cracked Open)

Quartz (Silicon Dioxide - SiO2)

Aquamarine

Aquamarine (Beryl variety) - Be3Al2(Si6O18)

Shale

Lutaceous Rock (Sedimentary Mudrock)

Milky Quartz with Chlorite/Mica inclusions

Silicon Dioxide (SiO2) with inclusions

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Petrified Wood

Silicified Wood (SiO2)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz with Limonite/Goethite staining)

Basalt with Quartz Vein

Mafic volcanic rock with hydrothermal SiO2 filling

Quartzite with Chlorite

Metamosphosed Quartz Sandstone (SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2 inclusions)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartz with Chalcopyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Pink Stained Rock (Likely Quartzite or Sandstone with Iron Oxide Staining)

Quartzite (metamorphic) or Sandstone (sedimentary); coloration likely due to hematite or other iron oxides.

Sandstone (with Lichen)

Arenite (primarily SiO2)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Petrified Wood

Silicified Wood (SiO2)

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Yellow Agate

Agate (Varietal form of Chalcedony/Quartz, SiO2)

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Citrine Quartz

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Sandstone

Clastic sedimentary rock (primarily SiO2)