It is possible to treat natural clear quartz (and occasionally other suitable minerals, such as danburite) in a process that bonds atoms of precious metals to the exterior / matrix of the crystal. These enhanced crystals have a coloured appearance, depending on the metals used in the process, and carry an added energy that, unlike "dyed" crystals, add to and extend the usual attributes of the base material. These crystals, as well as a few man-made minerals such as Gaia stone and Pink Lazurine, are very usable in crystal healing and meditation etc - their uses vary widely according to their nature - more in their own sections below.
COBALT AURA: is treated with cobalt, resulting in the crystals having a deep indigo, cobalt blue, magenta and gold
colouring. Sometimes this crystal is mistakenly confused with Flame Aura. This crystal shouts "Archaeon Michael" to me, with its deep blues
and golds! Strong, protective, reflective and supportive, this is an ideal crystal to carry or wear for protection against unwanted negative influences or psychic attack. It will also support the upper chakras and provide protection and energy whilst channelling, journeying or communicating with Guides.