Polariscope, handheld, with built-in light Resolution_1g If you use a micro-SD

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

Screen size: 42mm X 14mm

NOTE: the USB cable is to power the tester directly

These are Troy ounces for weighing gold and silver

Light: 3 X LED

Polariscope, handheld, with built-in light Resolution_1g If you use a micro-SDSummary 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,