Hasenfeld-Stein wants to be the primary supplier of top make diamonds for upscale retail jewelers. We understand the demands of your most discerning consumers. We recognize that in most cases, our diamond may be the most important purchase he has ever made, and probably the most important gift she has ever received. We take responsibility as their personal jeweler very seriously, and want to do everything within our power to help you… help them… find the perfect diamond.