DFW’s Original Diamond Broker. At The Diamond Broker, we stake our reputation on the brilliance of our one-of-a-kind wholesale diamonds in Dallas and unique diamond engagement rings. When it comes to wholesale jewelry stores, nobody beats The Diamond Broker’s exquisite taste and unrivaled customer service. We have an extensive collection of conflict-free loose diamonds, All Diamond Shapes, diamond engagement rings, wedding bands, Pre-Owned Rolex watches and other fine jewelry. Yellow gold diamond rings, rose gold, white gold and platinum. Each piece is representative of our diverse and timeless style.