Watch Glass Replacement

Watch Glass Replacement

Is your watch glass scratched, cracked or completely smashed? Here at Watch Surgery, we stock a wide range of flat and domed watch glasses in different shapes and thicknesses in our branches so that we are able to carry out watch glass replacement while you wait.

Whether you are looking for your sapphire, acrylic or a mineral watch glass to be replaced, a new date bubble or cyclops to be installed, or simply want to upgrade your watch's mineral glass to a sapphire crystal glass with an anti-reflective coating, our expert watchmakers have the necessary tools and skills to carry out the repair in store while you wait. During this process, we will also inspect the friction gaskets, which are vital parts for the water resistance of the watch.

Depending on the make and model of your watch, our expert watchmakers will recommend replacing the broken glass with the original manufacturer's glass or an unbranded alternative with the exact specifications. As we hold accounts with all major watch brands, if you wish to order the original branded watch glass, we can directly order from the manufacturers of your watch and fit it for you.

Watch glasses are available in 3 different materials: Sapphire cyrstal, Mineral, and Acrylic. Sapphire crystal glass is incredibly tough and scratch resistant and it is used on all premium brands. Mineral glass is easier to scratch than sapphire, but it is also much more affordable. Acrylic, which is used on older watches (or older styles), is a clear plastic glass.

  • Sapphire Crystal:
  • Sapphire crystal is the most expensive of all watch crystals. Sapphire crystal is made from pure aluminum oxide. As aluminum oxide undergoes extreme heat treatment, it crystallizes and forms clear masses. This transparent material has a hardness comparable to natural sapphire gemstone, which accounts for its name.

    MOHs scale (Mineral hardness scale) is a system to rate the scratch resistance of minerals based on the ability of harder materials to scratch softer materials. According to their scratch resistance, minerals are ranked from 1 to 10, with 10 being the hardest and 1 being the softest. Diamond which is the hardest mineral of all measures 10.

    Sapphire crystal's hardness measures 9 on the MOHs scale. However, sapphire crystal is extremely scratch resistant, though anything harder than sapphire, such as diamonds, moissanite, or silicon carbide, is capable of scratching it. Scratched sapphire crystal can’t be polished or repaired, instead it can only be replaced.

    Sapphire crystal is a highly reflective material. An anti-reflective (AR) coating can be applied to sapphire crystals to reduce its reflectivity. Unlike sapphire crystal, AR coating is prone to scratching with regular use. In order to protect AR coating from scratches, most luxury watch brands place their AR coating under the sapphire crystal.

  • Mineral glass:
  • Most fashion watch brands use this crystal as a cost-effective choice of glass. Mineral glass is made from silicon dioxide as known as silica. For increased scratch resistance, mineral glass undergoes very high temperatures during manufacturing. According to the MOHs scale, mineral glass has a hardness of 5-6. Scratched mineral glass can’t be polished or repaired, instead it can only be replaced.

    We stock an extensive range of mineral watch glass in different shapes, thicknesses, and sizes in all of our branches to allow us to perform watch glass replacements while you wait.

  • Acrylic glass
  • The acrylic crystal is essentially a specialised form of plastic (polymethyl methacrylate), which is specially shaped to fit over watches dials. Despite being soft and pliable, plastic is still relatively durable material, making it the perfect choice for watch crystals, especially in early days of watchmaking.

    In the early days of watchmaking, acrylic became the preferred material for watch manufacturers because of its soft, pliable, yet relatively durable and impact-resistant properties. Its pliable and soft nature makes it possible for manufacturers to form it into almost any shape they desire. According to the MOHs scale, acrylic has a hardness of 3.

    One of the most important characteristics of acrylic is its ability to be polished when necessary. Generally, minor scratches can be buffed out, but deeper scratches and cracks cannot be removed.