synthetic sapphire

Sapphire glass, not jewelry but high-tech.

Sapphire glass, not jewelry but high-tech.

It is not the first time we hear that a timepiece has a sapphire glass. Some people think it is made of real sapphire, others do not really know. Here is finally the explanation you were waiting for. There is Sapphire and Sapphire glass Sapphire is commonly the name given to the precious gemstone variety  from  the mineral called Corundum (an aluminium oxide). Most of the time it is blue because of the presence of iron and titanium but color car be variable depending on other complementary mineral. Because of its hardness, natural Sapphires can be used in many other domains than jewelry. We can find Sapphires in optical components as well in certain wristwatches movement bearings. In luxury watch-making, the watch glass is always what we call a “Sapphire glass”. Does it means that we tool a real big natural Sapphire and cut a little thin piece on it?…