Rock Identifier

Category

Metamorphic Or Sedimentary Depending On Local Grade

Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.

Gold-Bearing Quartz (Silicon Dioxide with Native Gold (SiO2 + Au)) — mineral

Gold-Bearing Quartz

Silicon Dioxide with Native Gold (SiO2 + Au)

Bowling Ball (Brunswick T-Zone Deep Space) (Polyester resin / Polyurethane polymer) — Synthetic (not a natural rock)

Bowling Ball (Brunswick T-Zone Deep Space)

Polyester resin / Polyurethane polymer

Synthetic (not a natural rock)

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Pink Granite (Phaneritic Plutonic Felsic Rock (Granite)) — igneous

Pink Granite

Phaneritic Plutonic Felsic Rock (Granite)

Lunar Highlands Breccia (Meteorite) (Lunar Feldspathic Breccia) — igneous

Lunar Highlands Breccia (Meteorite)

Lunar Feldspathic Breccia

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

Rose Quartz

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

Slag (Anthropogenic Vitrophyre (Iron or Smelting Slag)) — Mineral-like byproduct

Slag

Anthropogenic Vitrophyre (Iron or Smelting Slag)

Mineral-like byproduct

Pegmatitic Granite (Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)) — igneous

Pegmatitic Granite

Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Black Onyx (Cryptocrystalline Chalcedony (SiO2)) — mineral

Black Onyx

Cryptocrystalline Chalcedony (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Granite (Granite (Phaneritic intrusion / SiO2 + KAlSi3O8 + NaAlSi3O8)) — igneous

Granite

Granite (Phaneritic intrusion / SiO2 + KAlSi3O8 + NaAlSi3O8)

Zinc Ore (Sphalerite in Matrix) (Sphalerite (Zn,Fe)S within a carbonate or silicate host rock) — mineral

Zinc Ore (Sphalerite in Matrix)

Sphalerite (Zn,Fe)S within a carbonate or silicate host rock

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Tiger's Eye (Multicolor/Variegated) (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)) — mineral

Tiger's Eye (Multicolor/Variegated)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)

Quartz (Rose/Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose/Milky variety)

Silicon Dioxide (SiO2)

Peridot (Olivine (Mg, Fe)2SiO4) — mineral

Peridot

Olivine (Mg, Fe)2SiO4

Pink Diamond (Carbon (C)) — mineral

Pink Diamond

Carbon (C)

Amethyst (Silicon Dioxide with trace Iron (SiO2)) — mineral

Amethyst

Silicon Dioxide with trace Iron (SiO2)

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

Rose Quartz

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

Blue Lace Agate (Silicon Dioxide (SiO₂), a variety of Chalcedony) — mineral

Blue Lace Agate

Silicon Dioxide (SiO₂), a variety of Chalcedony

Pink Granite (Granite (Phaneritic igneous rock rich in Orthoclase)) — igneous

Pink Granite

Granite (Phaneritic igneous rock rich in Orthoclase)

Basalt (River Rock/Cobble) (Basalt (no specific mineral formula as it's a rock)) — Igneous

Basalt (River Rock/Cobble)

Basalt (no specific mineral formula as it's a rock)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Granite (composed primarily of Quartz (SiO2), Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (composed primarily of Quartz (SiO2), Alkali Feldspar, and Plagioclase)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Basalt River Stones (Aphantic Mafic Igneous Rock (Basalt)) — igneous

Basalt River Stones

Aphantic Mafic Igneous Rock (Basalt)

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

Rose Quartz

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

Massive Quartz (Milky or Gray) (Silicon Dioxide (SiO2)) — mineral

Massive Quartz (Milky or Gray)

Silicon Dioxide (SiO2)

Malachite (Copper carbonate hydroxide, Cu2CO3(OH)2) — mineral

Malachite

Copper carbonate hydroxide, Cu2CO3(OH)2

Pink Granite (Felsic intrusive igneous rock) — igneous

Pink Granite

Felsic intrusive igneous rock

Dolerite (Diabase) (Dolerite / Diabase) — igneous

Dolerite (Diabase)

Dolerite / Diabase

Granite (Pink/Potassium-rich) (Phaneritic Plutonic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)) — igneous

Granite (Pink/Potassium-rich)

Phaneritic Plutonic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)

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

Rose Quartz

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

Peridot (Gem-quality Olivine) (Magnesium Iron Silicate ((Mg, Fe)2SiO4)) — mineral

Peridot (Gem-quality Olivine)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Ruby (Corundum (Al2O3 with Chromium traces)) — mineral

Ruby

Corundum (Al2O3 with Chromium traces)

Diamond in Kimberlite (Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)) — igneous

Diamond in Kimberlite

Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)

Ambergris (Geological/Organic Specimen) (Ambra grisea (Produced by Physeter macrocephalus)) — organic material

Ambergris (Geological/Organic Specimen)

Ambra grisea (Produced by Physeter macrocephalus)

organic material

White Agate (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

White Agate (Chalcedony)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Granite (specifically Pink or Alkali Feldspar Granite) (Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)) — igneous

Granite (specifically Pink or Alkali Feldspar Granite)

Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)