This month’s Hong Kong Jewellery & Gem Fair draws buyers from around the globeWhen Joe Sengul sets up his booth at the upcoming Hong Kong Jewellery & Gem Fair, his showcases will be full of fashion-forward jewels. “Buyers are very into floral and geometric styles with lots of color, yellow and rose gold, and diamonds,” says the president of New York City–based House of Baguettes.The annual fair, which draws the bulk of its buyers from China and India, takes over the AsiaWorld–Expo Sept. 15–19, and the Hong Kong Convention & Exhibition Centre Sept. 17–21. Sengul is feeling optimistic, but ­experience has taught him to temper his expectations.“JCK Las Vegas was—unexpectedly—better than I thought it would be, considering that sales in the first few months of the year were on the softer side,” he says. Sales at the Hong Kong fair “have fluctuated in the past