0.8/1.0/1.2/1.5/2.0/2.5/3.0/2.3mm Thick Double Dome Sapphire Watch Glass Crystal
£14.33
Glass made of sapphire material are more transparent than other mineral materials. Anti scratch. The hardness is Mohs level 9, second only to diamond hardness. Even if accidentally scratched with a blade on the glass, it will not leave scratches.