In CNC machining, two fundamental processes play a pivotal role in shaping the final product, roughing, and finishing. Rough Machining as the name suggests, is employed to workpiece for the removal of ...

Justin Thomas reveals the incredible process he went through to reveal the $46,000 opal. Source: Black Opal Direct When Aussie dad Justin Thomas came across a parcel of rough stones mined from the ...

The federal government will soon ban the export of rough opal, a precious gemstone; a move aimed at persuading exporters to add value and hence increase revenues, according to senior officials at the ...