http://www.mardisjewelry.com 949-470-9500. Mardis Jewelry is the best jewelry store and custom design jeweler in Laguna Hills. Mardis offers a prime selection of diamonds, jewelry exchange, wedding rings, engagement rings, luxury watches, bracelets, earrings, on site jewelry repair, jewelry appraisals, cash for gold and diamonds and more. Mardis is also an official Philip Stein store. Mardis Jewelry is located Laguna Hills, California, just one mile south of the 5 freeway and Alicia Parkway exit. Mardis Jewelry is located adjacent to Starbucks coffee in the Ralph’s shopping center at the cross streets of Alicia and Paseo de Valencia.