Electrical and electronic machines, apparatus and instruments; scientific apparatus and instruments; machines, apparatus and instruments for observation, measuring, testing and checking; electrical and electronic analytical apparatus and instruments; material testing and examining apparatus and instruments; parts and fittings for all the aforesaid goods; all for use in relation to gems and gemology, for use by gemologists, retail or wholesale jewellers, jewellery manufacturers, gemstone traders or polishers, and analytical laboratories for use in research of gems, gemstones and jewellery