Gold pearls are highly sought after and are extremly rare. Formed in the gold-lipped oyster, golden pearls have been said to indicate and bring wealth.
The metaphorical meaning of the word pearl--very rare, very fine, very admirable, and very valuable.
The value of a natural pearl can be determined by the valuation of its size, shape, color, surface quality, orient and luster. Ideally round and smooth pearls are valued more.