I got a chance to visit the 37th MidEast Watch & Jewelry Show held at Sharjah Expo Center from Oct 14th to 18th, 2014. The event comprised of designer jewelry and watch brands from five countries Italy, Hong Kong, Thailand, India and Singapore all displaying exquisite pieces from their respective cultures and design industry.
I felt the event mainly focused on diamond and 925 sterling silver jewels with precious stones encrusted. Some brands also had 18 carat gold jewelry. I couldn't shop any of those but the offerings were mouth watering and pretty expensive. But if you're willing to spend a few grands then do checkout one of these exhibitions. Parking and entry was free.
The 38th MidEast Watch & Jewelry Show will be held during March and April 2015. So if you happen to come to the UAE during that time, you'll have a chance to checkout the exhibition yourself.
They also had a few stalls carrying imitation jewels from India, Thailand and Italy and I bought myself these two sets.