I W Marks, Houston's largest independent jeweler, has opened a second store at 2623 Town Center Blvd. in Sugar Land. The store will showcase such premiere jewelry lines as Lazare Diamonds, Jeff Cooper Platinum, Artcarved and Diana wedding bands, and Charriol. There will be an extensive selection of fine Swiss watches from Rolex, Baume & Mercier, Raymond Weil, Tag Heuer, Concord, and Omega, plus fine writing instruments and Jay Strongwater multi-jeweled and enameled picture frames. For information, call (713) 668-5000, or visit www.iwmarks.com.