Sedimentary Or Metamorphic Derived

Ruby

Corundum (Al2O3) with Chromium traces

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite

Chakra Stone Bracelet (mixed gemstones)

Multi-mineral/Gemstone assembly (primarily Quartz variety beads)

Tiger's Eye

SiO2 (Quartz with inclusion of iron oxides)

Serpentinite

Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Marble

Recrystallized Calcite / Dolomite (CaCO3)

Slate

Slate (Foliated Metamorphic Rock)

Unakite

Epidotized Granite

Greenschist (containing Epidote and Quartz)

Greenschist (Epidote-Chlorite-Actinolite Schist)

Red Garnet

Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)

Green Aventurine

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

Tiger's Eye

Pseudomorph of Crocidolite (SiO2 with iron oxides)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions)

Banded Agate (Onyx Variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Staurolite (Cross Stone)

Staurolite (Fe2+2Al9Si4O23(OH))

Schorl (Black Tourmaline)

Sodium Iron Aluminum Borosilicate Hydroxide - NaFe2+3Al6Si6O18(BO3)3(OH)3OH

Fuchsite

K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Quartzite

Metamorphic rock (primarily SiO2)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) within a resin matrix

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

Greenschist

Greenschist (Actinolite-Chlorite Schist)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Agate (Banded Chalcedony)

Agate (Silicon Dioxide, SiO2)

Moonstone (Tumbled)

Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite

Soapstone

Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (mostly SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebbles

Silicon Dioxide (SiO2)

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2

Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions (typically Fuchsite/Mica)