Smoky Quartz Mini-Cluster - Brazil meaning they change colors when

meaning they change colors when viewed from various angles

Rutile found in quartz can form is a wide range of colors including gold

The shell of aragonite and conchiolin creates thin layers with lots of color play due to interference of light

Amethyst is a variation of quartz that contains trace amounts of iron

Smoky Quartz Mini-Cluster - Brazil meaning they change colors whenHere is another great example of smoky quartz. All three quartz points contain various hues of gray brown. The points of this specimen look as if they are dancing with each other. It would serve as a great addition to any collection. Smoky Quartz is a brown gray yellow variety of quartz that contains aluminum impurities that are naturally irradiated by the Earth. This is the same process that occurs to form amethyst, but with a different metal. Its