54.32ct Trillion Amethyst 28mm Bergeon 6173 Rack Press For adjusting the balance wheel

For adjusting the balance wheel of Omega movements for co-axial calibres listed below that require a square timiny key

beads or carvings and occasionally rough crystals are left intact in their hosting rocks and sold as gorgeous rough specimens

A*F Swiss 125

150mm G Clamp

54.32ct Trillion Amethyst 28mm Bergeon 6173 Rack Press For adjusting the balance wheelAmethysts lustre is vitreous, it rates 7 on the Mohs scale which makes it suitable for jewellery that has secure settings to protect the stone from wear. Depending on the transparency of the stone which can be anything between transparent to opaque, amethysts are cut into faceted gems, cabochons, beads or shaped into carvings. Very commonly they are left intact as geodes, natural specimens of crystals still attached to their host rock, that become