Nephrite Jade is the highest quality for the Yoni exercise Made of 100% natural and genuine nephrite jade. Here we have the "Queen" of Jade: Nephrite Jade - Manually polished and drilled with outstanding finishing. - The Jade eggs are different coloured in variations from dark green to black green. Each egg is unique in its colour. - Dense & Pure: Nephrite has a tightly packed interwoven fibrous structure that makes it very tough, strong and dense. - Heavy and Hard: Nephrite Jade is heavier than most stones because of its tightly packed structure. This makes it a perfect choice as a Yoni egg. Nephrite Jade is also very hard, even harder than steel. It takes much more skills to shape and drill the eggs. - It has a beautiful, healing energy. In Taoist culture nephrite jade is considered the “Stone of Heaven” The name “nephrite” from Greek “nephros” which means ‘kidney’ with reference to its benefits in treating kidney disease. The jade egg is used in Taoist practice since ancient times. Nephrite Jade is a stone you buy once for a lifetime. The drilled hole is specially cleaned. The drilled Nephrite Jade Energy egg comes with: - with the certificate of authenticity - a velvet or silk pouch - detailed instructions, how to use it - stringed dental floss for the 1st use - enough dental floss for 2 more exercises - a pipe cleaner for the drilled hole - Access to 3 video clips with exercises & dental floss use explained (for 3 months) - Complimentary: The Energy breast massage exercise Shipping ONLY in New Zealand