Allison-Kaufman Company, in business since 1920, is one of the oldest and most respected diamond jewelry manufacturers in the United States. Our family-owned business has been committed to manufacturing the finest diamond jewelry for nearly a century. Our quality and workmanship are 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 Allison-Kaufman diamond jewelry.