What Is Verneuil Used for?
It Is Primarily Used to Produce the Ruby, Sapphire and Padparadscha Varieties of Corundum, as Well as the Diamond Simulants Rutile and Strontium Titanate. the...
It is primarily used to produce the ruby, sapphire and padparadscha 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.
What is a Verneuil ruby?
A synthetic ruby created using the flame fusion process developed by French chemist Auguste Verneuil sometime before 1902, when he announced his work. The procses involves melting pure alumina (Al2O3) powder with a flame of at least 2000°C (3,600°F).
When was the flame fusion method first used?
Flame fusion, discovered in 1902 by Auguste Verneuil, was the first successful process creating synthetic gemstones. Using powdered elements and high temperatures he was able to grow crystals in a laboratory. Initially, rubies were the only gems produced by this method.
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