A&D Gem Corp. will sponsor the “Guess A Gem” contest at the The JCK Show in Las Vegas. It allows buyers to test their ability in guessing the total weight of different stones by looking at them together. The contest has been a popular attraction for buyers at our various jewelry shows for many years, and the winners will receive prizes. A&D will be located at Booth 34233 in the AGTA section. For more information, contact A&D at (800) 234-3632.