42 Scientific and technological services, namely, research and design in the field of diamonds; industrial analysis and research services, namely, industrial research in the field of diamonds; design, technical research, development and testing of computer hardware, software, scientific and laboratory instruments all relating to the screening, grading, identification, authentication, observation, weighing, measuring, testing, checking, analysis, sorting, inspection, evaluation, inscription, verification including parcel verification and certification of diamonds including set diamonds, diamond melee, jewellery, precious and semi-precious stones; design and development of material testing and examining apparatus and instruments all relating to the screening, grading, identification, authentication, observation, weighing, measuring, testing, checking, cleaning, analysis, sorting, inspection, evaluation, inscription, verification including parcel verification and certification of diamonds including set diamonds, diamond melee, jewellery, precious and semi-precious stones; gemmological services, namely, quality control services in the nature of the screening, grading, identification, authentication, observation, weighing, measuring, testing, checking, analysis, sorting, inspection, evaluation, and verification including parcel verification of diamonds including set diamonds, diamond melee, jewellery, precious and semi-precious stones; quality management services, namely, quality evaluation and analysis, quality assurance, and quality control in the field of diamonds, jewellery, precious and semi-precious stones;diamonds, diamond melee, jewellery, precious and semi-precious stones; technical consultancy and advisory services in the field of weighing, measuring, testing and checking of computer hardware, software, scientific and laboratory instruments all relating to the screening, grading, identification, authentication, observation, weighing, measuring, testing, checking, analysis, sorting, inspection, evaluation, and verification including parcel verification of diamonds including set diamonds, diamond melee, jewellery, precious and semi-precious stones