Sherman Diamonds

Sherman Diamonds is a Houston-based jewelry and precious metals buyer located in the Greenway Plaza area, serving the greater Houston metropolitan region including River Oaks, West University, Memorial, and surrounding suburbs. The company specializes in purchasing diamonds (certified and non-certified), luxury watches, gold jewelry and bullion, precious coins, and estate jewelry collections. They operate with laboratory-grade testing equipment and claim to be Houston's only certified gemologist buyer with over 20 years of experience in the diamond trade.

The company's core service is immediate cash purchases for jewelry and precious items. They offer same-day payment without credit checks, professional appraisals using laboratory-grade equipment, and a distinctive 21-day buyback guarantee where customers can return items at full purchase price if they change their mind. Sherman Diamonds also advertises a price-match guarantee: they claim to beat any written offer from competitors by 15% or will repurchase items at full price within 21 days.

What distinguishes Sherman Diamonds from typical pawn shops is their emphasis on professional certification and expertise. The owner operates as a certified gemologist rather than a general pawn broker, and the company highlights laboratory-grade testing equipment and competitive appraisal practices. They position themselves as a jewelry dealer rather than a traditional pawn operation, also mentioning they sell fine jewelry and luxury watches alongside their buying operations. The convenient location in an upscale area (Greenway Plaza) and appointment-based model also differentiate them from standard pawn shops.

However, potential customers should note that this is fundamentally a jewelry buyer that exchanges items for cash—typical of pawn operations—with the added layer of certification and guarantees. The 21-day buyback promise and price-match guarantee suggest confidence in their valuations but also indicate they expect some customers may seek alternative offers. The business model depends on acquiring items at prices that allow them to resell or melt down materials profitably, which is standard industry practice but means customers should understand they're receiving wholesale value, not retail value.