Sapphire crystal also will be scratched

- Oct 10, 2017-

Sapphire crystal on the watch is not made of natural sapphire, but by the fine alumina powder as raw material, in a certain height of the furnace to form a sapphire crystal block, and then through numerous processes to make the watch very pure Sapphire crystal mirror, with anti-wear and anti-corrosion effect. Sapphire crystal mirror hardness after the diamond, equivalent to seven times the steel, but does not mean that it will not be scratched, sapphire crystal is not easy to wear, rather than never wear. Should pay special attention to diamonds, grinding stone, sandpaper, nail down, granite surface, concrete walls, etc., so as not to scratch the surface.