Gemdle

Black Gemstones

Black gemstones and crystals — 39 popular black stones with photos and identification notes. Looking for black crystal names for jewellery, collecting or a daily-carry stone? Start here, then test yourself in the crystal quiz.

Crystals that are black

Stones get their black colour from trace elements or inclusions, and the same mineral species can occur in several colours — so colour alone never confirms an identification. The most recognisable crystals and gemstones that are black include Obsidian, Snowflake Obsidian, Basalt, Tourmaline, Onyx, Hematite. Below is every black stone in Gemdle with photos, Mohs hardness and how to tell them apart — pair it with the guided identifier to narrow down an unknown specimen.

Mainly black stones & crystals

Stones that also occur in black

These minerals are best known in other colours but are also found in black — so a black specimen is possible, though the photo here may show a different shade. Confirm the colour of the actual stone, not just the species.

Frequently asked questions

What is the most popular black crystal?
Obsidian is one of the best-known black stones. Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth.
What crystals are black?
Common crystals and gemstones that are black include Obsidian, Snowflake Obsidian, Basalt, Tourmaline, Onyx, Hematite, Flint, Magnetite. Some minerals best known in other colours — such as Diamond, Opal — also occur in black.
Are all black gemstones rare or expensive?
No. Black stones range from common, affordable minerals to rare gem-quality material. Value depends on the species, clarity and whether the colour is natural or treated.