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About
Congressional Jewelry & Coin is a Rockville, MD coin dealer and precious metals buyer specializing in rare coins, currency, gold and silver bullion, and numismatics. Their expert team evaluates and purchases estate jewelry, diamonds, and gemstones, offering competitive payouts for gold, platinum, and sterling silver items. Open by appointment only, they provide professional assessments from trained jewelry and gemological experts to ensure accurate valuations for all collectibles and precious metals.