BLUE ZIRCON SYNTHETIC SPINEL ROUND CUT

SYNTHETIC BLUE ZIRCON SPINEL ROUND CUT
Synthetic spinel, manufactured using the Verneuil smelting and drop system.
Blue zircon color.
Mohs 8 hardness scale
Irregular, conchoid fracture
Imperfect Exfoliation
To set without complications, both in claw and rail.
Although it can be set in casting wax, it is at risk of losing color if metal and cylinder temperatures are not very controlled. This technique is not recommended for blue zircon synthetic spinel