Name: Lab Grown Diamond Emerald Bezel Necklace Short: Don't be a square. Be our emerald bezel necklace. Long: Sitting brilliantly on our classic 0.9mm diamond cut cable chain, adjustable from 15" to 18", our Lab Grown Diamond Emerald Bezel Necklace is a stunner. Totalling .2tcw, this 4x3mm bezel set diamond is an everyday favorite.