The Verneuil process is a flame-melting process used to manufacture synthetic sapphires.

SAPPHIRE – SUPER PERFORMANCE WITH HIGH-TECH MATERIAL Naturally occurring sapphire belongs to the corundum group and is a crystal with the chemical composition AI2O3. As a sapphire, it is often blue varieties (barbel blue) but also green, yellow-orange or violet that are mentioned. The colour is influenced by the smallest amounts of dirt, and the… Read More »SAPPHIRE – SUPER PERFORMANCE WITH HIGH-TECH MATERIAL