Malabar Gold and Diamonds to set up gold and diamond . - ET RetailNov 5, 2015 . One diamond jewellery manufacturing in Mumbai is also planned which is expected to become operational in the middle of the next fiscal, he said. COIMBATORE: Malabar Gold and Diamonds will be setting up two gold jewellery and one diamond jewellery manufacturing units by the end of this fiscal.set up gold manufacturing unit,Guide to Jewellery production | Make WorksMost jewellery is produced from the precious metals – silver, gold, platinum and palladium – but may be produced in other materials such as pewter (especially for work for the tourist industry) or steel. These metal objects can then be connected – to make chain, for example – or be set with stones, enamelled or polished and.