80f01b99_d_other_fine_natural_gemstones__Notes
[Gemstone] Opal-White,Black [Code] O [Enhancement Method] Impregnated with Oil [Use] Rarely [Stability] Fair [Care] Special [Notes] 
Avoid Heat/Ultrasonic/Chemicals
Gemstone Enhancements : Simply Sapphires-Blue Ceylon Sapphires, Untreated Sapphire, and Fine Colored Gems, Sapphires, Tanzanite and other fine natural gemstones
Notes