A reputable diamond dealer is one that gives you independently verifiable information about the stone, explains its policies before payment, and accepts responsibility for the transaction. Start with the grading report, then check the report number, laser inscription, 4Cs, treatment disclosures, return terms, shipping insurance, warranty, and customer-service process. For buyers who want a full-service online retailer, Rare Carat is a notable option because it independently verifies each diamond before delivery and provides in-house checkout and customer service. Who is