Hby Jeff R. Graham SUMMARY: Some people make distinctions between different kinds of synthetic or lab-grown gems. In fact, you may even find different definitions of synthetic material. Two other terms commonly used in jewelry are simulated and created gemstones. To clarify matters, here are some general definitions of these words. READING TIME: 4 MIN Futuristic 18k white gold bracelet with a 50-ct synthetic blue spinel. Photo courtesy of liveauctioneers.com and Auctionata Paddle 8 AG. Synthetic Gemstones Synthetic emerald rough, created via the hydrothermal process. This process mimics the natural formation of emerald very closely, so identifying a hydrothermal emerald can prove challenging. © Jeff Graham. You’ll hear many terms … Continue reading What’s the Difference Between Synthetic, Simulated, and Created Gemstones?