This is a pear shaped amazonite cabochon. It contains a nice pattern of light green and white.
Amazonite is the trade name of a green tectosilicate mineral, a variety of the potassium feldspar called microcline.
Amazonite is a fantastic energy filter. It can be very beneficial to yoto people who use the computer, tablet, cellphone, or microwave oven a lot. These things are filled with electromagnetic smog, and amazonite can help cleanse your aura of this smog. It will also work on calming all your chakras.