For other uses, see Opal.

Opal is a mineraloid gel which is deposited at low temperatures and occurs in fissures of various types of rock.

In 2277, Miranie, the Matriarch of New Athens, possessed a simple dark gown which was adorned with various gemstones, including opals. (TOS - Star Trek II Short Stories short story: "Under Twin Moons")

External linkEdit

• Opal article at Wikipedia, the free encyclopedia.