Locally owned and operated Diamond Mine has been servicing the Denver area for the past 20 years. Our friendly and knowledgeable staff is always happy to answer any questions. Offering services range from gold buying and jewelry repair, to collateral loans and the buying and selling of gold and jewelry there’s bound to be something we can do for you. Our friendly and knowledgeable staff is happy to help with anything you need or to answer any questions you may have.