Types Of Watch G-ladies tissot watch t007309111260
 

The term watch glass refers to the transparent covering over the face of a watch. There are a number of different materials that are used to make watch glasses. They are generally made of one of three common materials depending on the make,tissot watch, uses and quality of each particular watch. Each material has it's own advantages and disadvantages,tissot moto gp watch t0484172705701, so it is worth understanding the differences. Sometimes the glass is referred to as the crystal,ladies tissot watch t0073091112600, this is not to be confused with the quartz crystal inside of a lot of watches which regulates the timekeeping.

Acrylic Glass
The cheapest glass is actually a plastic. Acrylic plastic is tough,tissot t-race watch battery, flexible and transparent. It is not likely to shatter as it is very light. The downside is that it may scratch easily. The scratches can be removed,tissot watches vintage, it is advisable to consult a jeweller about the best way to proceed. Childrens' watches often have an acrylic glass as they are unlikely to be able to break it even if they are not as careful as they could be,tissot watches seastar 1000! 

Mineral Glass
The most common form of glass is mineral glass. This is made by using heat or chemicals to treat ordinary glass in order to make it more scratch resistant. If the glass does become too scratched it will need to be replaced.  Unfortunately this also has the affect of making the glass more likely to shatter. Occasionally when a watch glass shatters small shards of glass can lodge themselves into the workings. If this happens then the cost of repair is likely to exceed the value of the watch. Most watches,tissot ladyheart, however,tissot 1853 parts, do not end their life in this way; so there is no need to be unduly worried. But it is worth being careful if your watch glass does shatter in order to prevent this from happening.

Sapphire Crystal
The most desirable watch glasses are made out of either synthetic or genuine sapphire. Commonly synthetic sapphire is used. This is made out of crystalised aluminum oxide,tissot t0384301105700 t-one mens watch, it has the same physical properties as the natural gem frequently used in jewellery but without the colouring. It is the most expensive way to create a watch glass but the advantage is that the glass is incredibly durable. Sapphire rates 9 on the Moh scale,tissot online, (that is the scale that measures the relative hardness of all materials) and is just behind diamond which measures 10. Of all the glasses it is the least likely to shatter or be scratched. If anything you should be more concerned that your watch may scratch another surface,tissot prc 200 blue! Sapphire crystal is one of the features that pushes up the price of high end watches. This is due to the value of sapphire and partly because expensive tools that use diamonds to cut and shape the sapphire have to be used to make them. Premier brands such as Seiko and Citizen watches often use sapphire glass for their watches.