Name: XL Lab Grown Diamond Pear Bezel Necklace Short: Take a bite. She's extra juicy. Long: Sitting brilliantly on our classic 1.5mm diamond cut cable chain, adjustable from 15" to 18", our XL Lab Grown Diamond Pear Bezel Necklace is a stunner. Sitting at .4tcw, this 4x6mm bezel set diamond is an instant classic.