Tourmaline is a semi-precious gemstone used in the production of timepieces. It is renowned for its unique properties, which include its ability to produce electrical charges when heated or compressed. Its vibrant colors range from blues and greens to yellows and pinks, making it a popular choice for use in jewelry and watches. Tourmaline also has a high refractive index, which makes it ideal for use as a watch crystal, as it is able to create an aesthetic depth and clarity to the watch face.
