Tourmalinated quartz gets its name from the needle-like crystals of black tourmaline found within the quartz. Extremely high temperatures and pressure caused the two minerals to liquefy and mix together. Upon cooling the tourmaline crystalized within the gradually hardened quartz, forming the unique black needle inclusions. Most tourmalinated quartz is mined in Minas Gerais, Brazil, but can be found in many parts of the world.
Typically, it is preferred that quartz be inclusion-free, however, the tourmaline crystals make this type of quartz unique and collectable. It is quite durable and affordable, as well.
As with most gemstones, cleaning your tourmalinated quartz is as simple as using warm soapy water and a soft cloth. Be sure to rinse well with water. Keep away from household chemicals and heat as they can cause damage and discoloration to your stone.