Psi Prime
 Psi Prime Inc is a web programming firm specializing in building websites for retail jewelers in New York City.Matthew Perosi CEO founded the company in response to the impact that online jewelers had on Manhattan’s Diamond District a near-century-old historical landmark and primary hub of the worldwide diamond industry.As diamond retailers increasingly lose business to online jewelers companies like Psi Prime help Internet-wary brick and mortar retailers adapt to the times through retail e-commerce.