QUARTZ , Rock Crystal

A great page for the healing properties of Quartz is http://www.healing-crystals-for-you.com/clear-quartz-crystals.html

Los Cristales Maestros................... http://www.venta-de-minerales.com/cristales%20maestros.pdf
Great PDF file of the various types of crystal forms...... in Spanish..

A great page for Lemurian Quartz Cristals is http://www.healing-crystals-for-you.com/lemurian-quartz-crystal.html

For Vedic text see http://www.richardshawbrown.com/Book/Gemlore/Crystal.html