Better Business Bureau
The Council of Better Business Bureaus (CBBB) is the network hub for BBBs in the US and Canada. Like BBBs, CBBB is dedicated to fostering honest and responsive relationships between businesses and consumers — instilling consumer confidence and advancing a trustworthy marketplace for all.
Gemological Institute of America
Established in 1931, GIA is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry.