Lab-Grown Diamond 1.51ct, Round, Blue, SI2 Ring Mandrels Castaldo®—known throughout the jewelry industry

Castaldo®—known throughout the jewelry industry for performance

the other jaw features a convex dap-like punch nub sized to fit perfectly inside the channel on the facing jaw

5/32" square planisher

non-slip grip

Lab Report Number: 654437549

Lab-Grown Diamond 1.51ct, Round, Blue, SI2 Ring Mandrels Castaldo®—known throughout the jewelry industryThis round lab grown diamond is a special purchase item. The stone has a chemical make up identical to those found in nature; it performs at the bench just as a natural stone would. Please review the Specifications & Features section for details about this limited stock offering. Stone Shape: Round Color: Stone Size: 7. 33 mm Stone Type: Lab grown Enhancement: Synthetic (SYN) Mohs Hardness: 10 Refractive Index: 2. 417 Specific Gravity: 3. 52 Country