Gemdle ☰

Crystals That Start With U

There are 3 crystals, rocks and gemstones in Gemdle that start with the letter U — each with a specimen photo, its Mohs hardness and a quick note on how to spot it. Tap any stone for the full identification guide.

Notable crystals that start with U

Ulexite — White, vitreous; silky or satiny in fibrous aggregates lustre, Mohs 2.5.
Unakite — Green.
Uvarovite — Green, vitreous lustre, Mohs 6.5–7.5.

All 3 stones beginning with U

Ulexite Mohs 2.5
Unakite
Uvarovite Mohs 6.5–7.5

Frequently asked questions

How many crystals start with the letter U?

Gemdle lists 3 crystals, rocks and gemstones beginning with U, including Ulexite, Unakite, Uvarovite.

What is a well-known crystal that starts with U?

Ulexite is one of the most searched-for stones beginning with U. Ulexite, sometimes called TV rock or TV stone due to its unusual optical properties, is a hydrous borate hydroxide of sodium and calcium with the chemical formula NaCaB5O6(OH)6·5H2O.