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DKW Crystals
PRESELI BLUE STONE
SPOTTED DOLERITE
Mineral: pyroxene calcium magnesium silicate with plagioclase feldspar &  augite inclusions  
Formula: (CaAlSi3O8)  
Mohs: 6-6.5   
Colour: bluish grey/green with white inclusions   
Source: Preseli Hills, Pembrokeshire, Wales, UK
Renowned as the inner circle of the  Megalithic Standing Stones of Stonehenge, Wiltshire, Uk

Metaphysical
Astrological Sign: Aquarius  
Keywords:  communication, self-awareness/worth & Love, Healing
Element: Water
Chakra: Heart (4th)Throat (5th) Brow (6th)
Use:   facilitates communication on all levels.  Assists in detaching old outdated thoughts. Encourages unconventional thinking. Helps realising issues with self-awareness, self-worth, self-love & entangled emotional problems. Healing Catalyst on all levels.   
Healing: for the skin, ear, nose & throat, muscular structure.
The information on the crystals & minerals has been researched from numerous sources.
If you would like to expand your knowledge further, there are several web sites and books we recommend:
Web Sites
Books
www.mindat.org
HEALING CRYSTALS
Michael Gienger Earthdancer Findhorn Press  ISBN 978-1-84409-067-9
www.wikipedia.org
LOVE IS IN THE EARTH  
Melody  Earth-Love publishing House  ISBN 0-9628190-3-4
www.dkwcrystals.co.uk
THE BOOK OF STONES
Robert Simmons & Naisha Ahsian  Heaven & Earth Publishing LLC   
ISBN 0-9621910-3-5
QUARTZ CRYSTALS
Isable Silveira Earthdancer Findhorn Press  ISBN 978-1-84409-148-5