Naturally occurring sapphire belongs to the corundum group and is a crystal with the chemical composition AI2O3.
As a sapphire, blue varieties (barb blue) are often mentioned, but also green, yellow-orange or violet. The colour is influenced by the smallest dirt particles, of which the substances that give the colour are usually titanium and iron.
Synthetic sapphire was first successfully produced in 1902 by the French chemist Auguste Victor Louis Verneuil. The flame fusion process he developed still bears his name today. At the time, the aim of this development was to produce coloured synthetic sapphires and rubies.
Thanks to its unique combination and outstanding physical properties, sapphire is suitable for countless applications. After diamond, sapphire is the hardest and strongest material and can therefore be used in the watch industry and also in technical industries for high performance areas.
The high-tech synthetic product is inert, transparent when polished, acid-resistant, has low electrical conductivity and, with a melting point of over 2000 °C, is suitable for the most demanding applications requiring perfect precision.
Nothing can disturb the beauty of sapphire. Sapphire is almost indestructible and resists virtually all external influences. Watch glasses and technical components made of sapphire are impressive because of their scratch resistance, their non-porous, shiny and polished surface and their complete transparency. A material developed for generations.