Many of the diamonds sold in the triad eventually pass through the hands of the esteemed GIA-trained gemologists at State St. Jewelers. Come here first to receive the highest payout for your graded and ungraded diamonds. Our gemologists have decades of experience and are able to properly evaluate all gemstones down to the most precise details. This means we do not have to hedge our offer against the unknown and are able to make the highest cash offer. Since our parent company is a top online jewelry seller, we have a extensive need for diamonds of all qualities. We reuse these diamonds in our manufacturing and do not simply pass them off to a middleman.