US$ 23.60
These are Troy ounces for weighing gold and silver
PCBs and other specialist work
Screen size: 42mm X 14mm
Light: 3 X LED
Polariscope, handheld, with built-in light Resolution_1g These are Troy ounces forSummary 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,
US$ 23.60
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