3.84ct Round Violet Spinel 9.2mm jewelling tool

3.84ct Round Violet Spinel 9.2mm jewelling toolSpinel 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: 9. 20 9. 24; Carat Weight

Can set upper and lower limit

First drill with a slow velocity(feed rate)

Red (Fluorescent) Enamel Resin

Ø35 to Ø65mm

65mm Twist Drill

095 x 280 x 8 Automatic

Overall Length 135mm

50mm (Rolex) Universal*

Oscillating weight bolt keys: 2892 & 7750

For drum B35411

Ø40/45mm Die

Hardened jaws