Features:

* HEAVY DUTY and precise because it made with metal and optical glass

* Durable, reliable and made by professional craftsmen

* Gemmologist tool for diagnosing optical properties of a gemstone (singly refractive or double refractive)during usage)

 

Specifications:

* Size: Length : 80mm

* Diameter : 28mm

* Power for flash light : AA battery x 2 (Batteries are not included)

* Material: Optics glass, Metal

* Gemmologist tool for diagnosis optical properties of your gemstone(singly refractive or double refractive)