Valentine jewellery [india] pvt. Ltd. Manufactures gold jewelry tanzanite rings. Valentine jewellery [india] pvt. Ltd is an iso: 9001-2000 certified company. These gold jewelry tanzanite rings are available in 18 k. They are studded with diamonds, emeralds, rubies, sapphires, tanzanite, tsavorites and other precious and semi precious color stones. High quality finish has been provided to this designer jewelry through the latest technology and machinery. The designs of these gold jewelry tanzanite rings are the combination of human fineness with the modern technology. They are available in different weights like 6.200 gms, 7.620 gms, 11.350 gms, etc.