By Hannah Connorton
The organizers of the JCK Las Vegas show just announced that Train will be performing at this year’s Rocks the Beach concert at the Mandalay Bay in Las Vegas.
This week National Jeweler reported on the 2015 statistics from the Jewelers Board of Trade, which showed that more retail jewelers and repairers in the U.S. are closing up shop.

In addition, a 5-carat lab-grown blue diamond was graded by the Gemological Institute of America, the largest faceted lab-grown blue GIA has ever studied, while JCK announced San Francisco band Train as its Rocks the Beach concert headliner.

Recap the week that was, in photos.

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Since 1906, National Jeweler has been the must-read news source for smart jewelry professionals--jewelry retailers, designers, buyers, manufacturers, and suppliers. From market analysis to emerging jewelry trends, we cover the important industry topics vital to the everyday success of jewelry professionals worldwide. National Jeweler delivers the most urgent jewelry news necessary for running your day-to-day jewelry business here, and via our daily e-newsletter, website and other specialty publications, such as "The State of the Majors." National Jeweler is published by Jewelers of America, the leading nonprofit jewelry association in the United States.