A striped variety of coarse opal, having some resemblance to wood.

plural of wood opal

plural of opal glass

Synonym of angel aura

(gemology, mining) A large raw opal spheroidal gemstone with pineapple-like projection points / (jewelry) Alternative form of opal pineapple

(jewelry) A pineapple-shaped-cut opal gem as a part of jewelry / (gemology, mining) Alternative form of pineapple opal

(physics) the milky turbidity observed in a fluid as it is slowly cooled to just above its critical point, at which point two clear phases (gas and liquid) form

Exhibiting a milky iridescence like that of an opal.

the state of being opalescent

resembling opal in its iridescence; having a milky white iridescence.