This crystal is Lapis Lazuli. Lapis has high vibrations working on 4 different chakra levels. Using this crystal to meditate will help your third eye open allowing you to access inner truths. It helps clear mental and emotional blockages setting your soul free from negativity so it can express itself with no boundaries.
Lapis Lazuli Tumbles
These Tumbled Lapis Lazuli Crystals are about 1" long and 1" wide for the large size and about 5/8" long and 1" tall for the medium size. About 3/4" long and 1/2" wide for the small size and about 5/8" long and 1/2" tall for the extra small size.