Randi Molofsky is the author of "A Girl's Guide to Buying Diamonds" (Rockport, 2005), a non-fiction title that explores the ins and outs of diamond purchasing, and covers topics from the 4Cs to personal style. Molofsky's career began as the Fashion Editor for National Jeweler magazine, and she has been an in-demand freelance journalist specializing in jewelry and timepieces for publications including W and New York magazine for the last decade.