Precious stones are the most beautiful and valuable of all the gemstones. Their colors are vibrant, translucent and brilliant. These natural crystals are also durable, but at the same time rare, and they can be used to create both jewelry and accessories.
Smoky Quartz is a grey and translucent variety of quartz. It ranges in clarity from almost complete transparency to a brownish-gray crystal that is almost opaque. Like other quartz gems, it is a silicon dioxide crystal. It was not commonly used in the ancient times, but it has recently become a popular gemstone used for jewelry.