Black Akoya Baroques
Black Akoya Baroques
Actually, there are two common methods for creating black Akoya pearls. The most common is dyeing, and the second is irradiation.
Dyeing a strand affects the nacre of an Akoya pearl. The dye permeates the nacre, but not the bead nucleus.
Irradiation (gamma ray radiation) affects the nucleus of an Akoya pearl. It literally burns the mother-of-pearl nucleus to make a black pearl.
And to state the obvious, Akoya pearls are never naturally black. Only Tahitian pearls have this attribute. (There are a few exceptions such as Cortez Pearls and quahogs.)
Baroque Akoya pearls generally have a very low value. A black baroque Akoya will have an even lower value since it has been treated. The retail value on a the nicest black, baroque, Akoya strand of this length and size would be around $250, while a very poor strand like this might retail for as little as $15.