Here is a Dioptase specimen likely from Kazakhstan. It's an excellent specimen with a few crystals. 

Name: Dioptase

Locality: likely Altyn-Tyube , Kazakhstan

Size:  Largest crystal measures 0.7 cm. Entire piece measures  6 x 4 x 3.5 cm

Since minerals are difficult to judge by pictures, I do have a return policy! 

Feel free to ask questions!

Will combine shipping.
Returns accepted within 14 days of arrival for refund of purchase price but no refunded shipping. Returns have to be sent also via priority mail with delivery confirmation and insurance.