3.96ct Cushion Cut Fire Opal 11.7x9.9mm Bergeon 8744 Bracelet Holding Block so light goes where you

so light goes where you want it to

Especially designed for grinding

Mainspring sleeve sizes (inside diameter):

Can also be used with Horotec tools 07

3.96ct Cushion Cut Fire Opal 11.7x9.9mm Bergeon 8744 Bracelet Holding Block so light goes where youFire Opal is an unusual variety of opal gemstone from Mexico, with colours ranging from yellow to orange and orange red. Depending on the origin of the stone it might be very fragile which makes it more suitable for jewellery such as necklaces, brooches and earrings that are less likely to be knocked. Opal is the birthstone for October. Mohs Scale of Hardness: 5. 5 6. 5 Sources: The most famous source of fire opals is the state of Quertaro in Mexico.;