Lab Reports a Rise in Undisclosed Lab-Grown Colored Diamonds
Grading lab Gemological Science International (GSI) has seen an increase in undisclosed laboratory-grown brown, yellow, and pink diamonds infiltrating the natural diamond supply chain. The undisclosed synthetics are often sold mounted, mixed in with natural colored diamonds in jewelry, says Debbie Azar, cofounder and president of the New York City–based lab. She notes that “most […]