Tumble stone - Moonstone

Formerly, it was believed that the moonstone was fossilized rays of the moonlight. Evidence of this was supposed to be a mysterious blue glow appearing on its surface as it rotates. In fact, the moonstone is one of the feldspars, the most abundant mineral in the earth's crust. 

According to legends, whoever comes into possession of a moonstone will be endowed with the ability to foretell the future.

Size: approximately 20-30mm per stone, sale of one stone chosen at random