Smoky quartz gemstone wire-wrapped on 14k Gold Fill Wire. Approx 8mm. As these are natural stones, each one may vary slightly in shape. Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray. These rings will be on the darker end of the scale. Smoky quartz is said to signify stability and grounding, so much so that the crystal is called the “grounding stone.” Smoky quartz is a variety from the quartz crystal family.