You may not know, but the movements of mechanical watcheshave many ruby.They are there to ensure that the watches function well and are reliable over time.
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Rubies present within the movement of a watch mechanical (and therefore of an automatic watch) limit friction within the latter. If there were no rubies, there would be metal-to-metal friction which, by force, would damage the operation of the watch. Rubies are attached to the pivots the axes of the balance and the wheels, in other words where the friction zones are the most important. They are arranged in the form of a cushion at the ends of the pivots and make it possible to hold the entire structure of the movement in place.
Ruby is the second hardest stone after diamond with a very low coefficient of frictionthat is why it is the stone chosen to be at the heart of the mechanism.
Friction is therefore greatly minimized,therefore there is less energy loss within the movement. In short, the presence of rubies thus makes it possible to improve the precision of the watch, its durability and its reliability over time.
However, it should be mentioned that rubies used in mechanical watch movements are synthetic ruby. Indeed Augustus Verneuil established in 1902 a process to produce rubies in the laboratory. This process has even taken the name of its inventor, known as the Verneuil process. Before the invention of this process, the mechanical watches were provided with real rubiesthus, the more their number increased, the higher the value of the watch. Since synthetic ruby is much cheaper to produce than conventional ruby, it has spread widely in the watch industry, especially since the rise in the price of ruby in 1920. Synthetic rubies used in a mechanical watch have exactly the same chemical properties as traditional ruby. Synthetic ruby is the result of melting between the powder ofaluminium oxide and red dye.
To sum up, a movement that includes many rubies will not necessarily be more expensive because the synthetic ruby has a low market value. On the other hand, the more rubies a movement possesses, the more complex it is and can therefore be a guarantee of a certain quality.
Practically allautomatic watches are equipped with Miyota's 9015 movement which features 24 Rubis. The exception is our Condordia diving watch, which is equipped withautomatic movement 2824-2 of ETA which includes 25 Rubies.