Project Report on Gems And Jewellery Eiri-1036

Jewellery making is one of the oldest industries in India. It has  been a traditional craft in India, each  region in the country specialising in different designs and skills. The Indian artisans and craftsman  have developed mastery over  the  manufacture  of solid gold ornaments, gem-encrusted jewellery, delicate ornaments with  filligree  work, enamelled  jewellery  as well as costume jewellery.  Jewellery is one trade which is still placed in the cottage industry  category.  However, the growing recognition  of  Indian  workmanship by foreign luyers has result in  bosting  the export of cut  and polished gems.  The Gem and Jewellery   Export  Promotion Council  was set up in 1966.  This was a welcome stepas  gem   and jewellery  has  been recognised as an   export-oriented  industry. The council operating under the Union Commerce Ministry as a  non profit  service institution, has helped in the  establishment   of  testing laboratories and training  school at Jaipur  and  the Indian Gemmological  Institute  at  Delhi. The council  represent  about 3,000 exporters of gems and  jewellery. Gold   has  a  characteristic pleasing colour  but   it   assumes various colours, e.g: deep violet, ruby  and purple, when reduced to a finely divided state by volatilization or colloid formation. It  is  the most extensible of all metals and can be  reduced  by hammering  to a thickness of 0.00008. Impurities specially tellurium, bismuth and lead reduce its malleability and ductility pure  gold  melts at 1063oC. Gold-copper  alloys are harder more  fusible and less malleable and ductile than pure gold. They  have  higher  tensile strongths. The densities  of  these binary  alloys are lower  while those of triple alloys  of  gold, silver, and copper are higher.