The Rockhound dictionary

1,043 minerals, gem varieties, rocks, fossils, meteorites, organic gems, and lapidary materials, with how to tell them apart. Shared by everyone who uses Rockhound: pick one of these names when you add a specimen, and its properties fill themselves in.

27 entries fit.

Name	Hardness	Lustre	Colours
Achondrite Meteorite, tektite, or impactite		dull	black, often glossy crust, light grey to greenish interior
Allende Meteorite, tektite, or impactite		dull	black fusion crust, dark grey interior with white inclusions
Ataxite ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Campo del Cielo ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Canyon Diablo ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Carbonaceous chondrite ⚠️ Meteorite, tektite, or impactite		dull	black, dark grey, with white or light inclusions
Chelyabinsk Meteorite, tektite, or impactite		dull	black fusion crust, light grey interior, dark shock veins
Chondrite ⚠️ Meteorite, tektite, or impactite		dull	black or brown fusion crust, grey interior with metal flecks
Darwin glass Meteorite, tektite, or impactite		vitreous	green, black, white, grey
Gibeon ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Hexahedrite ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Indochinite Meteorite, tektite, or impactite	5–6	vitreous	black, very dark brown, olive brown on thin edges
Iron meteorite ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Libyan desert glass Meteorite, tektite, or impactite		vitreous	pale yellow, greenish yellow, colourless, milky white
Lunar meteorite Meteorite, tektite, or impactite		dull	grey, white, dark grey, with light and dark fragments
Martian meteorite Meteorite, tektite, or impactite		dull	dark grey, greenish grey, black
Mesosiderite ⚠️ Meteorite, tektite, or impactite		metallic, dull	dark grey, silvery metal patches, brown when weathered
Moldavite Meteorite, tektite, or impactite	5.5–6	vitreous	bottle green, olive green, brownish green
Muonionalusta ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Octahedrite ⚠️ Meteorite, tektite, or impactite		metallic	black to brown crust, steel grey when cut, rusty brown when weathered
Ordinary chondrite ⚠️ Meteorite, tektite, or impactite		dull	black or brown crust, light grey inside, rusty when weathered
Pallasite ⚠️ Meteorite, tektite, or impactite		metallic, vitreous	yellow-green to amber olivine in silvery metal
Seymchan ⚠️ Meteorite, tektite, or impactite		metallic, vitreous	silver-grey metal, some with yellow-green olivine
Shatter cone Meteorite, tektite, or impactite			grey, black, tan, as the host rock
Sikhote-Alin ⚠️ Meteorite, tektite, or impactite		metallic	black to bluish grey crust, silver-grey metal
Suevite Meteorite, tektite, or impactite			grey, greenish grey, with dark glass bits
Tektite Meteorite, tektite, or impactite	5–6	vitreous	black, dark brown, green

The dictionary's figures are typical ones, and specimens vary. ⚠️ marks entries with a caution (toxic, radioactive, or easily damaged): open one to see what to do.