Rock Identifier

Category

Gemstone

Browse gemstone specimens identified by the Rock Identifier community.

Learn about Gemstone in the encyclopedia

Achroite

Alexandrite

Almandine Garnet

Almandine Garnet

Amber

Andamooka Opal

Andesine

Andesine-Labradorite

Andesine-Labradorite

Andradite Garnet

Andradite Garnet

Ant Hill Garnet

Ant Hill Garnet

Aquamarine

Australian Opal

Australian Opal

Aventurine Feldspar

Aventurine Feldspar

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — gemstone

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Emerald in Quartz Matrix (Beryl (Be3Al2Si6O18) with Chromium trace elements) — gemstone

Emerald in Quartz Matrix

Beryl (Be3Al2Si6O18) with Chromium trace elements

Rose Quartz Beads (Crystalline Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — gemstone

Rose Quartz Beads

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

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — gemstone

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Banded Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — gemstone

Banded Agate

Cryptocrystalline Silicon Dioxide (SiO2)

Blue Sapphire (Corundum (Al2O3)) — gemstone

Blue Sapphire

Corundum (Al2O3)

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — gemstone

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Ruby (Corundum (Al2O3)) — gemstone

Ruby

Corundum (Al2O3)

Diamond (Princess Cut) (Carbon (C)) — gemstone

Diamond (Princess Cut)

Carbon (C)

Smoky Quartz (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz

Silicon Dioxide (SiO2)

Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Diamond (Diamond (pure carbon, C)) — gemstone

Diamond

Diamond (pure carbon, C)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Orgonite Pyramid (containing Amethyst and mixed minerals) (Silicon Dioxide (SiO2) in synthetic resin) — gemstone

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Tree Agate (Silicon Dioxide (SiO2) with Dendritic Inclusions) — gemstone

Tree Agate

Silicon Dioxide (SiO2) with Dendritic Inclusions

Opalite (Synthetic Glass (Simulated Moonstone/Opal)) — gemstone

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Cherry Quartz with Rose Quartz (Crystalline Quartz (SiO2) with glass-based synthetic components) — gemstone

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Carnelian (Silicon dioxide (SiO2) with iron oxide impurities) — gemstone

Carnelian

Silicon dioxide (SiO2) with iron oxide impurities

Moonstone (Potassium aluminum silicate (KAlSi3O8)) — gemstone

Moonstone

Potassium aluminum silicate (KAlSi3O8)

Blue Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — gemstone

Blue Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Amethyst (Silicon Dioxide with iron impurities (SiO2)) — gemstone

Amethyst

Silicon Dioxide with iron impurities (SiO2)

Diamond (Faceted) (Diamond (Pure Carbon, C)) — gemstone

Diamond (Faceted)

Diamond (Pure Carbon, C)

White Topaz (faceted) (Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)) — gemstone

White Topaz (faceted)

Aluminum silicate fluoride hydroxide (Al2SiO4(F, OH)2)

Diamond (in Jewelry) (Carbon (C)) — gemstone

Diamond (in Jewelry)

Carbon (C)

White Buffalo Turquoise (or White Buffalo Stone/Howlite/Magnesite) (Calcite/Dolomite with Chert/Flint (Often mislabeled as Turquoise, true White Buffalo is a mix of chalcedony and calcite/dolomite)) — gemstone

White Buffalo Turquoise (or White Buffalo Stone/Howlite/Magnesite)

Calcite/Dolomite with Chert/Flint (Often mislabeled as Turquoise, true White Buffalo is a mix of chalcedony and calcite/dolomite)

Opalite (Synthetic Glass (Simulated Opal)) — gemstone

Opalite

Synthetic Glass (Simulated Opal)

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

Green Aventurine

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

Amber (Succinite (Fossilized Tree Resin)) — gemstone

Amber

Succinite (Fossilized Tree Resin)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Citrine (Silicon Dioxide (SiO2) with iron impurities) — gemstone

Citrine

Silicon Dioxide (SiO2) with iron impurities

Carnelian Agate (Silicon Dioxide (SiO2)) — gemstone

Carnelian Agate

Silicon Dioxide (SiO2)

Aquamarine (Tumbled) (Beryl (Be3Al2Si6O18)) — gemstone

Aquamarine (Tumbled)

Beryl (Be3Al2Si6O18)

Carnelian Agate Beads (Silicon Dioxide (SiO2)) — gemstone

Carnelian Agate Beads

Silicon Dioxide (SiO2)

Clear Quartz (SiO2 (Silicon Dioxide)) — gemstone

Clear Quartz

SiO2 (Silicon Dioxide)

Diamond (C (Carbon)) — gemstone

Diamond

C (Carbon)

Diamond (or Diamond Simulant) (C (Carbon) or synthetic equivalent) — gemstone

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Diamond or Cubic Zirconia (Carbon (diamond) or Zirconium dioxide (cubic zirconia)) — gemstone

Diamond or Cubic Zirconia

Carbon (diamond) or Zirconium dioxide (cubic zirconia)

Diamond (C) — gemstone

Diamond

C

Diamond (C) — gemstone

Diamond

C

Ruby / Red Corundum (Al2O3 (Aluminum Oxide with Chromium trace)) — gemstone

Ruby / Red Corundum

Al2O3 (Aluminum Oxide with Chromium trace)

Diamond (C (Carbon)) — gemstone

Diamond

C (Carbon)

Diamond (or Diamond Simulant) (Carbon (C) if diamond, various if simulant) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant