Vintage 14K Gold Plated Earrings With Embedded Opal Stones

One of a kind vintage drop dangle earrings. With embedded opal stones that have some color play. They are either Australian opals, or lab created. Not sure how to tell. Please see closeup pictures for details. The hooks are either solid 14 karat yellow gold, or gold plated (and not magnetic). They are not stamped, but back then, the stamps weren't required on thin solid gold wire pieces. In very good condition. 3.2 cm long.