Producing a 3 to 5 millimeter nacreous pearl through this process ... The main factor that determines the color of pearls is ...

An curved arrow pointing right. At Pearl Factory, customers can handpick their very own oyster. Once they've opened the oyster, they can create jewelry with their pearl. More from Entertainment At ...

spurring the oyster to coat itself with thin layers of a mineral secretion that form a pearl over several years. Only a small percentage ever achieve the size, shape and color desirable to most ...