Ralph Mueller & Associates have been serving the Valley of the Sun for over 28 years, and have over 60 years combined experience in buying and selling diamonds and precious gemstones between their two senior Graduate Gemologists. Over the years we have purchased millions of dollars of fine gemstones and jewelry from people all over the world. Since 1983 Ralph Mueller and Associates has been building an impeccable reputation in the jewelry trade, and international markets. Ralph Mueller & Associates mission is to provide SERVICE in the highest professional, courteous and respectful manner. There is simply no better place to sell fine diamond jewelry or sell gold in Phoenix or throughout Arizona.  If you are thinking you would like to sell your gemstone, sell fine jewelry or sell gold in Phoenix, you have come to the right place. We are GIA Gemologists and we have our own gemological lab on-site. We are confidential buyers of round diamonds, marquise diamonds, emerald cut diamonds, asscher cut diamonds, princess cut diamonds, oval cut diamonds, and all natural fancy colored diamonds. We buy large diamonds and jewelry from $500 to $100,000 and up!  When our diamond, gold and jewelry buyers quote you a price, it's based on current world market conditions. Our worldwide reputation is your guarantee. When you sell to us, you will receive top market value for your diamonds and jewelry. If you are looking to sell diamonds, sell jewelry or sell gold in Phoenix, you owe it to yourself to call Ralph Mueller & Associates.