2.5cm in diameter
 
The twin dark blue sleeping beauty rings weigh are $800 each and weigh 25g. It's a very unique rare deep blue sleeping beauty stone with a beautiful engraved design on the sides of the silver. 
 
The Sleeping Beauty stone is a precious gem with a sky-blue hue. It helps keep a healthy mind and is known as a gemstone of dreams and hope.
 
Turquoise is said to be the oldest stone in man’s history. It’s precious and highly prized for centuries across different nations and cultures. Well known as the stone of protection, it encourages us to honor ourselves as a creation and a tool of the divine.  Tibetan Turquoise is formed by the percolation of Himalayan salt, and groundwater through aluminous rock in the presence of copper – and the intense underground conditions around the Himalayan Mountain range, over many millions of years, giving us a beautiful color of this gem. It tends to be blue-green in color as opposed to most Turquoise found elsewhere leans more towards the blues.