Polariscope, handheld, with built-in light Resolution_1g the remainder being hidden underneath

the remainder being hidden underneath the mount

A synthetic-diamond tester is for the experienced jeweller and professional diamond dealer

If you use a micro-SD card (not supplied) you get lots of extra features

8mm diameter (approx

Polariscope, handheld, with built-in light Resolution_1g the remainder being hidden underneathSummary A tube 90mm tall X 35m diameter, it detects double refraction. Area to put the stone, 12mm diameter (OK for most stones and small rings). Built in light. Detail This instrument will show you if a gemstone is singly or doubly refractive. For instance, Moissanite is strongly doubly refractive, diamond is singly refractive. This is, therefore, a very cheap (if a little fiddly) method of distinguishing diamond from Moissanite. You cannot, however,