Mineral Like Byproduct

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Sandstone (Quartz Arenite)

Clastic Sedimentary Rock - Quartz Arenite

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Conglomerate

Conglomerate (Rock composed predominantly of rounded clasts > 2mm)

Red Sandstone

Arenite (with Iron Oxide)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Fossil Sand Dollar (Echinoidea)

Phylum Echinodermata, Class Echinoidea (likely Dendraster or Scutella)

Pegmatite (White Granite variant)

Pegmatitic Granite (Quartz and Feldspar rich)

Included Quartz Beads (likely Phantom Quartz or Garden Quartz)

Quartz (SiO2) with various mineral inclusions

Milky Quartz Pebble with Chert

Silicon Dioxide (SiO2)

Glauconitic Sandstone

Greensand (Glauconite-bearing sandstone)

Peach Aventurine

Silicon Dioxide (SiO2) with inclusions

Rose Quartz

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

Druzy Agate (Star-cut Geode Slice)

Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline Quartz

Purple Agate (Dyed Chalcedony)

SiO2 (Silicon Dioxide) with organic dyes

Quartz (Rose/Milky variety)

Silicon Dioxide (SiO2)

Rose Quartz

Quartz (Silicon Dioxide - SiO2) with trace impurities of Titanium, Manganese, or Iron

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartz (Quarzite or Massive Quartz vein)

Silicon Dioxide (SiO2)

Fossilized Bivalve Shell

Bivalvia (fossil specimen)

Granite

Granite (Felsic Plutonic Rock / SiO2 + Al2O3 + K2O + Na2O + CaO + FeO + MgO)

Basalt

Extrusive mafic igneous rock

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Kimberlite

Kimberlite (Potassic ultramafic volcanic rock)

Sandstone (with differential weathering)

Arenite / Quartz Sandstone (SiO2)

Red Sandstone

Clastic Terrigenous Sedimentary Rock (typically Hematitic Quartz Arenite or Arkose)

Red Sandstone

Arenite (with Iron Oxide)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Sandstone concretion (Ironstone-stained)

Arenite with Limonite/Hematite staining (Silica-based with Iron Oxides)

Sandstone (Ferruginous)

Arenite (complex silicate composition with iron oxides)

Limonite Concretion (Ironstone)

Limonite (FeO(OH)·nH2O) with Goethite and Hematite

Quartz / Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

Sandstone

Arenite

Quartz Geode (Cracked)

Quartz (Silicon Dioxide, SiO2)

Sandstone (Pebble)

Arenite (primarily SiO2)

Yellow Aventurine

Quartzite with inclusions (SiO2)