Rock Identifier

Category

Synthetic (Not A Natural Rock)

Browse synthetic (not a natural rock) specimens identified by the Rock Identifier community.

Learn about Synthetic (Not A Natural Rock) in the encyclopedia

Asphalt Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Chalk

Zircon

Obsidian

Kimberlite

Emerald in Matrix

Emerald in Matrix

Tripolite

Guano

Halite

Aquamarine Matrix

Aquamarine Matrix

Rock Salt

Raw Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Raw Citrine Quartz

Silicon Dioxide (SiO2)

Conglomerate (Polymictic Conglomerate) — sedimentary

Conglomerate

Polymictic Conglomerate

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Diamond (or Simulant) (Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)) — gemstone

Diamond (or Simulant)

Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)

Picture Jasper (SiO2) — Sedimentary/Mineral

Picture Jasper

SiO2

Sedimentary/Mineral

Amethyst (Quartz (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Hag Stone (Perforated Flint / Chert Node) — sedimentary

Hag Stone

Perforated Flint / Chert Node

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Dyed Quartz / Rose Quartz Imitation (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz / Rose Quartz Imitation

Silicon Dioxide (SiO2) with artificial pigment

Citrine (Silicon Dioxide (Quartz variety), SiO2) — mineral

Citrine

Silicon Dioxide (Quartz variety), SiO2

Pearl (Pearl; primarily aragonite (CaCO₃) in nacre) — gemstone

Pearl

Pearl; primarily aragonite (CaCO₃) in nacre

Dzi Bead (Agate Bead) (Cryptocrystalline Quartz (SiO2) - Chalcedony/Agate) — mineral

Dzi Bead (Agate Bead)

Cryptocrystalline Quartz (SiO2) - Chalcedony/Agate

Dyed Agate (Chalcedony (SiO2 with impurities)) — mineral

Dyed Agate

Chalcedony (SiO2 with impurities)

Dyed Agate Slice (Chalcedony (Silicon Dioxide, SiO2) with artificial pigment) — mineral

Dyed Agate Slice

Chalcedony (Silicon Dioxide, SiO2) with artificial pigment

Diamond (Cut Gemstone) (Natural Carbon (C)) — gemstone

Diamond (Cut Gemstone)

Natural Carbon (C)

Chert / Flint Nodule (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint Nodule

Microcrystalline quartz (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Amethyst Cluster (Silicon Dioxide (Quartz variety: Amethyst), SiO2) — mineral

Amethyst Cluster

Silicon Dioxide (Quartz variety: Amethyst), SiO2

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Yellow Quartz / Citrine Pebble (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz / Citrine Pebble

Silicon Dioxide (SiO2)

Quartz Crystal (Smoky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (Smoky Quartz)

Silicon Dioxide (SiO2)

Carved Stone Turtle (Carved Soapstone and Quartz) — mineral

Carved Stone Turtle

Carved Soapstone and Quartz

Mixed pebble collection, including likely flint, quartzite, and fossil material (Varied silicate rocks; visible specimen may include chert (microcrystalline SiO₂), quartzite, and a possible fossil) — sedimentary

Mixed pebble collection, including likely flint, quartzite, and fossil material

Varied silicate rocks; visible specimen may include chert (microcrystalline SiO₂), quartzite, and a possible fossil

Blue quartzite or blue aventurine glass-like aggregate (Quartzite, predominantly SiO₂ (identification uncertain from image)) — metamorphic

Blue quartzite or blue aventurine glass-like aggregate

Quartzite, predominantly SiO₂ (identification uncertain from image)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Tumbled Purple Agate (Silicon Dioxide (SiO2) - Chalcedony variety) — mineral

Tumbled Purple Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Mystic Topaz (Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating) — mineral

Mystic Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating

Dragon Vein Agate (Dyed/Treated) (Agate (SiO2)) — mineral

Dragon Vein Agate (Dyed/Treated)

Agate (SiO2)

Blue-dyed Quartz Druzy (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Blue-dyed Quartz Druzy

Silicon Dioxide (SiO2) with artificial pigment

Smoky quartz fragment (Quartz, silicon dioxide (SiO₂), smoky variety) — mineral

Smoky quartz fragment

Quartz, silicon dioxide (SiO₂), smoky variety

Pink Tiger's Eye (Silicified Riebeckite Asbestos (SiO2)) — metamorphic

Pink Tiger's Eye

Silicified Riebeckite Asbestos (SiO2)

Rough Diamond (Diamond (Native Carbon, C)) — mineral

Rough Diamond

Diamond (Native Carbon, C)

Blue Dyed Quartzite (Silicon Dioxide (SiO2) with artificial pigment) — metamorphic

Blue Dyed Quartzite

Silicon Dioxide (SiO2) with artificial pigment

Tumbled ruby-bearing corundum (Corundum (Al₂O₃), likely ruby variety) — mineral

Tumbled ruby-bearing corundum

Corundum (Al₂O₃), likely ruby variety

Amethyst (Silicon Dioxide (SiO2)) — mineral

Amethyst

Silicon Dioxide (SiO2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Tumbled blue glassy mineral, possibly sodalite or blue aventurine (Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material) — mineral

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material

Turquoise bead bracelet (Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Turquoise bead bracelet

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Dyed Blue Agate (Silicon Dioxide (SiO2) with artificial cobalt-based dye) — mineral

Dyed Blue Agate

Silicon Dioxide (SiO2) with artificial cobalt-based dye