Specializing in loose diamonds, colored gemstones, fine jewelry and platinum diamond engagement rings. They offer GIA certified diamonds and wholesale jewelry. A wide selection of loose Diamond, Alexandrite, Ruby, Tanzanite, and Emeralds. INTA Gems also carries round and asscher cut, princess and emerald cut diamond stud earrings. Design and build custom rings and jewelry. A family-operated business and the official jeweler of Miss California USA. INTA Gems & Diamond designer, Peter Young, designed the Miss California Crown. Located in Los Angeles Diamond District for over 30 years.