If you are going to buy CRYSTALLIZEDÖpearl cufflinks, buy the best, buy Swarovski. Swarovski cufflinks feature genuine CRYSTALLIZEDÖSwarovski Elements. Unlike synthetic glass pearls, SWAROVSKI ELEMENTS's crystal simulated pearls have a leaded crystal core making them heavier, and SWAROVSKI ELEMENTS's pearl coating is similar to a natural pearl luster and is consistent in color. It is also resistant to perspiration, UV rays, perfumes, scratches and washing and warms to the skin like real pearls do.