Mineral (Gemstone)

Chert Nodule

Microcrystalline Silica (SiO2)

Black Star Diopside (beads)

Diopside (CaMgSi2O6) - a member of the pyroxene group

Rose Quartz

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

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite, Sodalite, Calcite, and Pyrite)

Carnelian (Chalcedony variety)

SiO2 (Silicon Dioxide)

Smoky Quartz

Silicon Dioxide (SiO2)

Bi-Color Tourmaline (or Watermelon Tourmaline)

Tourmaline (complex borosilicate mineral group with general formula AD3G6(BO3)3T6O18(OH,O)4)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Obsidian

Volcanic glass (primary composition: SiO2)

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Banded Agate (specifically Carnelian Agate / Sardonyx)

Silicon Dioxide (SiO2) with iron oxide inclusions

Green Jasper (Chert)

Silicon Dioxide (SiO2)

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Banded Chert in Matrix

Microcrystalline Quartz (SiO2)

Jasper and Quartzite Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tree Agate

Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions

Red Jasper

Silicon Dioxide (SiO2)

Chert (variations include Flint/Jasper)

Chert (Silicon Dioxide, SiO2)

Pegmatite

Pegmatitic Granite

Tektite (Indochinite)

Tektite (High-silica natural glass)

Seraphinite

Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.

Garnet-Bearing Gneiss

Almandine-Garnet Gneiss

Ferrosilicon Slag (Industrial Vitrified Glass)

Vitreous Silicate Residue

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Rose Quartz

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

White Chalcedony (Agate)

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Chalcedony (Agate/Chert variety)

Silicon Dioxide (SiO2)

Beryl (Emerald Variety)

Beryllium aluminum silicate (Be3Al2Si6O18)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Breccia

Clastic Breccia (General mineral composition depends on fragments, often SiO2 or CaCO3)

Quartz

Quartz (SiO₂)

Banded Calcite (variety Honey Calcite / Chocolate Calcite)

Calcium Carbonate (CaCO3)

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Malachite

Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)

Diamond

Diamond (pure Carbon, C)

Citrine

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)