Smoky Quartz is a deep brown or grey variation of the Quartz crystal. Named for its smoky appearance, Smoky Quartz is the national gemstone of Scotland and has been mined in the British Isles since 300 BCE. Smoky Quartz is most often sourced today from Australia, Brazil, Madagascar, and the United States. Metaphysical healers use Smoky Quartz to aid in letting go of past hurts and stepping into the present moment with gratitude. This stone is also said to hold properties that alleviate mental heaviness associated with stress and grief.