SYNTHETIC YELLOW TOPAZ SAPPHIRE ROUND CUT

SYNTHETIC YELLOW TOPAZ SAPPHIRE ROUND CUT
Synthetic sapphire, manufactured using the Verneuil smelting and drop system.
Yellow topaz color, usually medium tone. In small pieces we use darker tones
Mohs 9 hardness scale
Small, irregular, conchoid fracture
Not 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 yellow topaz synthetic sapphire