Like this site? Pledge support via Patreon!

Ois forOpal

Opal is not a true mineral, but a crystalline gel made up of spheres of silicon dioxide and water. The pattern of the spheres makes opal refract light into lots of different colours, with blue and green being the most common. Opal is used often in jewelry, and is the national stone of Australia.

Opal rhymes with ...

Sample, Purple, Dimple, Example, Pimple, Simple ... see all