Gemstones (Loose) Colored Gemstones, Loose; Jewelry Bracelets; Jewelry Earrings & Earclips; Jewelry Estate Jewelry; Jewelry Jade Jewelry; Jewelry Necklaces; Jewelry Pendants; Jewelry Rings, Diamond & Color; Mason Kay Offers Commercial to Fine Quality Natural, Type a Jadeite Jade Jewelry and Loose Cabochons and Carvings. They also offer Jade Testing/Certification and Value Estimation Services, Jewelry Industry, Necklaces, Fine Jewelry, Jewelry Material ...