They’ve made their lists and checked them twice! Retailers are ready to shop at JCK. Here’s what they’ll be bringing back from Mandalay Bay.Rose gold, yellow gold, colored gems, and sliced diamonds and stones are topping to-buy lists of retailers heading to JCK Las Vegas, coming to the Mandalay Bay Resort & Casino from May 31 through June 3. Jewelers in cities from Seattle to Atlanta enjoyed a robust holiday season in 2012 and are reporting solid initial returns for the first quarter of 2013. As a result, buyers appear confident for the remainder of the year and many say they are p