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Built-in wifi connectivity
used with main lens and auxiliary lens becomes x10)
Diameter of Head 16mm (5/8")
Model Number: Optical Power Meter
0.91ct Oval Blue Spinel Casting Flask Ø90 x 65mm Built-in wifi connectivitySpinel used to be offered as a ruby alternative but nowadays it is praised for its own special characteristics. Spinel can be red, pink, orange, purple, violet or blue. Red and pink are caused by traces of chromium, orange and purple by chromium and iron and dark blues by traces of iron and cobalt. Transparency: transparent to opaque Mohs scale: 8 Sources: Sri Lanka, Afghanistan, Myanmar, Tanzania and Madagascar.; Stone Size: 7. 52x5. 96x3. 0; Carat