Since Dick Spera founded it in 1975, General Refining Corporation has grown from a refinery serving New York’s Diamond District into a family operation with roots in the city and Alaska. Today, the company’s 36,000-square-foot Hempstead facility handles precious-metal refining and assay work for customers across the jewelry, mining and industrial communities, while its Alaska offices serve miners directly.
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Scientific MetalsFamily-owned and operated in Woodside, New York, Scientific Metals refines precious-metal scrap for dental and jewelry customers across North America. The company keeps melting, incineration and assay under one roof, processing each lot individually and emphasizing transparent returns without sales representatives or third-party intermediaries. Its dental refining work has earned a place on the cover of Dentaltown magazine, an unusual distinction for a refinery.FLUSHING, NY
Landis Refining Co., IncFounded in 1953 as Henry Landis Inc., Landis Refining Co., Inc. buys and processes scrap precious metals from dental practices and jewelry businesses. This family-owned corporation brings two generations of expertise to assaying and refining, with a customer-service approach built around free collection containers, insured shipping options, and flexible payment choices. Its programs also accommodate small quantities, including a single dental crown or bridge.HAMPTON BAYS, NY
Star RefiningEstablished in Boca Raton in 1991, Star Refining processes precious-metal scrap for dental practices, jewelers, pawnbrokers and individuals. Unlike a broker, it handles melting and assay in-house, providing itemized settlement reports and same-day payment for walk-in customers. Its valuation consultants also visit dental offices across the United States and Canada for on-site assessments and payment.NORWALK, NY
Colonial Metals, IncWith four decades in the precious-metal chemical market, Colonial Metals, Inc. makes and supplies platinum-group and other precious-metal chemicals from its Maryland headquarters. The privately held company pairs custom synthesis and specialized packaging with analytical services, including support for high-purity semiconductor and energetic-beam applications. It also operates the only on-site full-service ruthenium refinery in the Americas and provides large-scale rhenium refining.ELKTON, MD