Mineral, Jewelry

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Banded Gneiss

Gneiss (pronounced "nice")

Unakite

Epidote-Feldspar rock

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe/Chlorite)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Malachite

Malachite - Cu2CO3(OH)2

Chert (specifically Agate/Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Milky Quartz

Quartz (SiO₂)

Clear Quartz (Crystal Quartz)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Rose Quartz

Quartz (Silicon Dioxide - SiO2)

Rose Quartz

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

Sagenitic Agate (with Goethite/Rutile inclusions)

Silicon Dioxide (SiO2) with hydrous ferric oxide inclusions

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Picture Sandstone)

Sandstone (primarily Quartz with Iron Oxide impurities)

Milky Quartz

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Dendritic Agate (also known as Dendritic Siltstone or Mudstone)

Silicon Dioxide with Manganese/Iron Oxide inclusions (SiO2 + MnO2)

Green Moss Agate / Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron and Manganese inclusions

Obsidian

Obsidian (Volcanic Glass)

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Amber

Succinite (specifically for Baltic amber); chemical formula approx. C10H16O

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Tiger's Eye (with Hematite/Jasper)

SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)

Orange Calcite

Calcium Carbonate (CaCO3)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Quartz

Silicon Dioxide (SiO2)

Septarian Nodule or Mud Crack Fossil

Septarian Nodule (Concretion)

Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix

Blue Quartzite

Quartzite (silicon dioxide, SiO2)

Tiger's Eye (Small Polished Bead)

Pseudomorph of Quartz after Crocidolite (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Ruby

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Abalone Shell (Mother of Pearl)

Aragonite (Biogenic Calcium Carbonate, CaCO3)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Diamond

Native Carbon (C)