The Jem - Ii Diamond Tester Utilizes The Feature That Diamonds Have Very High Thermal Conductivity. (Note: It Does Not Differentiate Natural Diamond From Synthetic Moissanite.) Use It To Test Loose Or Mounted Stones. Calibrates To Adjust For Temperature And Size Differences Of The Stone. Equipped With An Ultraviolet Light To Test Fluorescent Reaction Of Stones. Comes With A Leather Case And Operating Instructions. Uses A Single 9v Battery (Not Included).; This New Light-weight Visor Combines Two Functions, Focusing Two Led Beams Of Light On An Object While Magnifying The User's View Of The Object Through A Wide-view Lens. Comes With Four Lenses: 1.2x, 1.8x, 2.5x, And 3.5x. Light Includes 2 Powerful Led Lights And Can Adjust Horizontally And Vertically. Led Lights Last Nearly 10,000 Hours Of Usage Time Each. Much More Than Traditional Flouresent Light Bulbs. Adjustable Headband. Comes With Aaa Batteries.

The JEM - II diamond tester utilizes the feature that diamonds have very high thermal conductivity. (NOTE: it does not differentiate natural diamond from synthetic moissanite.) Use it to test loose or mounted stones. Calibrates to adjust for temperature and size differences of the stone. Equipped with an ultraviolet light to test fluorescent reaction of stones. Comes with a leather case and operating instructions. Uses a single 9v battery (NOT included).; This new light-weight visor combines two functions, focusing two LED beams of light on an object while magnifying the user's view of the object through a wide-view lens. Comes with four lenses: 1.2x, 1.8x, 2.5x, and 3.5x. Light includes 2 powerful LED lights and can adjust horizontally and vertically. LED lights last nearly 10,000 hours of usage time each. Much more than traditional flouresent light bulbs. Adjustable headband. Comes with AAA batteries.

Product Information
Product Type:	Gemological Tool Kit	Product Group:	Tools