Shah Gems & Jewellery Manufacturing Co. Supplies Silver Plated Oxidised Necklace. Shah Gems & Jewellery Manufacturing Co. Manufactures a wide range of studded or plain silver, gold and pearl jewellery, precious gem stones, stone beads and fashion jewellery. The Silver Plated Oxidised Necklace is used as fashion jewellery and is available in stone studded design and polished finish. The Silver Plated Oxidised Necklace comes in the in various lengths ranging from 17 to 18 inch and in total Weight of 59 Grams.