Bill is a diamond cutter with thirty years of experience. He was formally trained in the only accredited trade school at the time, the American School of Diamond Cutting. He was one of only a few who completed the three one year courses. He is a college graduate and has launched his W.R.Bray Cut Scoring System for Modern Brilliant Cut Diamonds (patent pending) also known as BrayScoreÂ®. He is a frequent contributor on the Polygon Trading Network. He has been a self-employed diamond cutter since 1977.