River Diamond Precious Metal RingsNature carves it's own course. A river of single cut inverted diamonds (tcw . 5) lies within a random, deep channel encircling these rings, cutting through an oxidized sterling silver ring covered with either hammered platinum or 18K yellow gold surface and sides (not plate it's solid). The darkened sterling, visible only around the diamonds when worn, creates a perfect backdrop for the diamonds, accented with the precious metal of your choice. Single