Man Made Material (Metal)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Chert (Jasper/Quartzite variety)

Microcrystalline Silica (SiO2)

Quartzite

Quartzite (primarily SiO2)

Olivine (Peridotite)

Magnesium Iron Silicate - (Mg, Fe)2SiO4

Basalt

Basalt

Quartzite with Dark Mineral Inclusions

Quartzite (primarily SiO2) with accessory minerals

Sandstone (Ferruginous)

Arenite (variable SiO2 with Fe2O3 staining)

Basalt

Extrusive Mafic Igneous Rock (composed primarily of Plagioclase and Pyroxene)

Chert (Jasper/Quartzite river stone)

Microcrystalline Silicon Dioxide (SiO2)

Conglomerate

Clastic Conglomerate (Lithic-rich)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Diorite

Diorite (intermediate intrusive igneous rock)

Diorite (Salt and Pepper Rock)

Diorite

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Granite

Phaneritic intrusive igneous rock (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

Sandstone (Pebble)

Arenite (primarily SiO2)

Sandstone (Quartz-rich Pebble)

Arenite (primarily SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Sandstone (Weathered Pebble)

Arenite (primarily SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Pyrite

Iron Sulfide (FeS2)

Indigo Gabbro

Gabbro (Mafic Intrusive Rock)

Chert (specifically Gray/Tan Chert Node)

Microcrystalline Quartz (SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Basalt

Extrusive mafic igneous rock

Quartz (specifically Milky or Clear Chunk)

Silicon Dioxide (SiO2)

Chert (specifically River Stone / Jasper variety)

Microcrystalline Quartz (SiO2)

Quartzite

Quartzite (primarily SiO2)

Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Mica Schist

Schist (Muscovite/Biotite Schist)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Quartzite

Quartzite (SiO2)

Diorite (Salt and Pepper Rock)

Phaneritic plutonic igneous rock (sodium-rich plagioclase feldspar and hornblende)

Brecciated Jasper

Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)