Allison-Kaufman designer of fine jewelry. Weiss Jewelers is an authorized retailer of this very fashion forward and luxury designer of fine jewelry. Allison-Kaufman Company, in business since 1920, is one of the oldest and most respected diamond jewelry manufacturers in the United States. Our quality and workmanship is unsurpassed and our styling is legendary. Our knowledgeable and experienced staff selects only the most brilliant diamonds to be meticulously hand set into exquisite, handcrafted Satisfaction is assured when the selection comes from Allison Kaufman diamond jewelry.