80f01b99_d_other_fine_natural_gemstones__Notes
[Gemstone] Pearl-Natural [Code] D [Enhancement Method] Dyed to produce grey/black [Use] Rarely [Stability] Good/Very Good [Care] Special [Notes] 
Avoid Chemicals/Ultrasonic
Gemstone Enhancements : Simply Sapphires-Blue Ceylon Sapphires, Untreated Sapphire, and Fine Colored Gems, Sapphires, Tanzanite and other fine natural gemstones
Notes