Our annual JCK Retailer Survey takes the market’s temperature in five essential categories of retail operations. How does your business stack up? For JCK’s 2011 Retailer Survey, we quizzed hundreds of retailers about their ­businesses vis-à-vis five essential categories of retail operations—Store, Stock, Sales, Staff, and Salary—and stumbled upon some intriguing findings in the process.The upshot, though hardly a news flash, bears repeating: Service is your single most effective selling point. What’s especially noteworthy, however, is the nuance behind that result. The retailers who reported higher sales in 2011 than the year prior were less likely to report a price/value USP and more likely to report selection/quality of diamonds, customization, or ambience as the reasons behind their success.In other words, three years after the Great Recession, many jewelers are finding