... : 27.5g Color : Multicolor,Purple,White Gemstone : Pearl Clasp : N/A Type : Single Strands Diameter : 7-8mm,8-9mm,10-11mm ... Having experienced nearly 30 years' growth, it has become a specialized freshwater pearls dealer integrating processing, design and trade from ... temperature & weak corrosion, that pearls to be bleached under a low temperature can be in the oxidation resisting and anticorrosion ...