The Popular book, Crystal Healing by Judy Hall, states the use of this set of crystals. This Pack includes Judy's 7 chakra crystals and 5 master elemental crystals. Crystals in this pack are roughly 1-1.5cm in size on average.
Chakra Crystals -Red Jasper, Carnelian, Yellow Jasper, Green Aventurine, Blue Lace Agate, Sodalite, Amethyst
Master Crystals - Bloodstone, Clear Quartz, Rose Quartz, Labradorite, Smoky Quartz.
The Book Is available separately.