Rock Identifier

Category

Igneous Or Metamorphic

Browse igneous or metamorphic specimens identified by the Rock Identifier community.

Learn about Igneous Or Metamorphic in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Moonstone (Feldspar) (Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)) — mineral

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

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

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Quartz-rich metallic-looking pebble (Likely quartz or quartzite; exact identification is uncertain from the blurred image) — mineral

Quartz-rich metallic-looking pebble

Likely quartz or quartzite; exact identification is uncertain from the blurred image

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

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

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Strawberry Quartz (or Hematoid Quartz) (Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite) — mineral

Strawberry Quartz (or Hematoid Quartz)

Silicon Dioxide (SiO2) with inclusions of Hematite or Goethite

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Moonstone (Potassium aluminum silicate (KAlSi3O8) with Albite (NaAlSi3O8)) — mineral

Moonstone

Potassium aluminum silicate (KAlSi3O8) with Albite (NaAlSi3O8)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Quartz Pebble (often referred to as 'Sea Glass' or 'River Stone' when worn smooth) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (often referred to as 'Sea Glass' or 'River Stone' when worn smooth)

Silicon Dioxide (SiO2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Tumbled quartz-rich pebble (Quartz, silicon dioxide (SiO₂), likely milky or included quartz) — mineral

Tumbled quartz-rich pebble

Quartz, silicon dioxide (SiO₂), likely milky or included quartz

Rounded quartz-rich pebble (Most likely milky quartz (SiO₂), possibly a quartzite or pale chert fragment) — mineral

Rounded quartz-rich pebble

Most likely milky quartz (SiO₂), possibly a quartzite or pale chert fragment

Amethyst (Quartz variety) (Silicon Dioxide (SiO2)) — mineral

Amethyst (Quartz variety)

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal fragment (Quartz, silicon dioxide (SiO₂)) — mineral

Clear quartz crystal fragment

Quartz, silicon dioxide (SiO₂)

Milky quartz-rich vein rock (Quartz, SiO₂, likely massive or microcrystalline quartz) — mineral

Milky quartz-rich vein rock

Quartz, SiO₂, likely massive or microcrystalline quartz

Blue Sapphire (likely lab-grown or treated) (Corundum (Aluminum Oxide, Al2O3)) — gemstone

Blue Sapphire (likely lab-grown or treated)

Corundum (Aluminum Oxide, Al2O3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (with Druzy/Polished Edge) (Smoky Quartz (Silicon Dioxide, SiO2)) — mineral

Smoky Quartz (with Druzy/Polished Edge)

Smoky Quartz (Silicon Dioxide, SiO2)

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

Citrine

Silicon Dioxide (SiO2) with iron impurities

Rose Quartz (Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese

Likely milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Likely milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz pebble (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Quartz pebble (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

Likely black cabochon gemstone pendant (Uncertain; possibly black star sapphire, black spinel, or obsidian) — gemstone

Likely black cabochon gemstone pendant

Uncertain; possibly black star sapphire, black spinel, or obsidian

Likely tumbled black stone or glassy mineral (Indeterminate from image; possibilities include obsidian, hematite, or black tourmaline) — mineral

Likely tumbled black stone or glassy mineral

Indeterminate from image; possibilities include obsidian, hematite, or black tourmaline

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

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

Smoky Quartz

Smoky Quartz (SiO2: Silicon Dioxide)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz (Vein Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Moonstone (Feldspar) (Orthoclase or Oligoclase (KAlSi3O8)) — mineral

Moonstone (Feldspar)

Orthoclase or Oligoclase (KAlSi3O8)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Rounded quartz pebble (Quartz (SiO₂), possibly milky or smoky quartz) — mineral

Rounded quartz pebble

Quartz (SiO₂), possibly milky or smoky quartz

Weathered quartz-rich rock fragment (Likely quartz-bearing feldspathic rock; exact identification requires testing) — mineral

Weathered quartz-rich rock fragment

Likely quartz-bearing feldspathic rock; exact identification requires testing

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)