It's a beautiful natural faceted cut handmade blue color  tourmaline loose gemstone for jewelry from Afghanistan. All the pictures were taken by iPhone 8 plus in natural diffuse light.

Size              :  7 x 5.5 x 4.2 mm
Color            :  Blue
Cut               :   Emerald
Clarity          :  Slightly included 
Weight         :  1.40 ct
Origin          :   Afghanistan
Stone           :  Tourmaline
Certificate   :   On buyer demand (buyer will pay the cost):
Treatment   :   none