This is a natural faceted Australian green sapphire.
Quality natural earth-mined fancy cut gem.
From the Queensland Gem fields.
It is not heated or treated in any way. 
Round shape.
Clean to the eye 
It measures approx. 6 mm x 4.4 mm in size.
It weighs approx. 1.15 carat.
The gem is quite pretty and unique.
All photos taken on my desk with an overhead fluorescent the only light.
I post express with tracking in Australia.
I post also with tracking for overseas buyers.