"The Verneuil process, also callled flame fusion, is a method of manufacturing synthetic gemstones, developed in 1902 by the French chemist Auguste Verneuil. It is primarily used to produce the ruby and sapphire varieties of corundum, as well as the diamond simulants rutile and strontium titanate. The principle of the process involves melting a finely powdered substance using an oxyhydrogen flame, and crystallising the melted droplets into a boule. the process is considered to be the founding step of modern industrial crystal growth technology, and remains in wide use to this day."
From Wikipedia, the free encyclopedia
We use our own laboratory Verneuil furnace for the production of various types of crystals, from corrundum and sapphire to ytrium aluminium garnet with various rare earth metal dopings.
our Verneuil furnace