Antropogenic (Man Made Glass Byproduct)

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Plagioclase Feldspar

NaAlSi3O8 – CaAlSi2O8 (Sodium-Calcium Aluminum Silicates)

Sandstone Clast

Arenite (primarily SiO2)

Limestone

Calcium Carbonate (CaCO3)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide cement)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Sandstone (Ferruginous)

Arenite with Iron Oxide (Fe2O3) cement

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)

Green Kyanite

Kyanite (Al2SiO5)

Sandstone (with Liesegang rings or Oxidation)

Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Milky Quartz (Water-worn pebble)

Quartz (Silicon Dioxide, SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese or Iron

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Jasper (Mookaite style)

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Jasper (with Manganese or Iron inclusions)

Silicon Dioxide (SiO2)

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartz (Crystal Cluster)

Silicon Dioxide (SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2 + Fe2O3)

Quartzite

Quartzite (primarily SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Cloudy Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified wood (Quartz, SiO2)

Diamond (Set in jewelry)

Cubic Carbon (C)

Granite Pebble (Salt and Pepper Granite)

Felsic Intrusive Igneous Rock (Granite)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Porphyritic Rhyolite (Red Porp)

Porphyritic Rhyolite (Felsic volcanic rock)

Diamond

Cubic Carbon (C)

Green Fluorite

Calcium Fluoride (CaF2)

Quartz (specifically Milky/White Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Quartzite

Quartzite (primarily SiO2)

Corundum (Sapphire/Ruby in Matrix)

Aluminium oxide (Al2O3)

Lepidolite

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)

Fluorite (Green Fluorite)

Fluorite (Calcium Fluoride, CaF2)