The government has raised the import tariff value on Gold from 404 to 421 dollars per 10 grams. A Finance Ministry release issued in New Delhi said, Silver import tariff value has also been raised to 663 dollars per kilogram as against 635 dollars per kg. The decision has been taken in view of the volatility in the global prices. The Central Board of Excise and Customs in this regard have issued the notification. AIR correspondent reports, import tariff value is the base price at which customs duty is determined to prevent under-invoicing. The tariff value is revised on a fortnightly basis after analysing the global price trend.