clean gold

Gold; jewellery incorporating precious stones; precious stones; gold alloys; jewellery containing gold; jewellery made from gold; jewellery made from silver; platinum (metal); jewellery in precious metals; diamonds; jewellery incorporating diamonds. Mining extraction. Treatment of metals; metal finishing; metal forging; metal machining; metal moulding; metal plating; metal polishing; metal stamping; metal tempering; metallurgical smelting; metallurgical processing; extruding of metal alloys; polishing of metals; processing of metallic materials; working of metals; grinding of metals; hammering of metals; laser treatment of metal; metal treating; metal brazing; metal casting; metal cutting. Mechanical engineering services (design); advisory services relating to material testing; design and development services in metallurgy; metallurgical analysis; provision of information relating to industrial design; provision of information relating to industrial engineering; research relating to industrial machinery; advisory services relating to industrial design; advisory services relating to industrial engineering.