Capital Gains on sale of Jewellery

Dear Sirs,

I require the following clarifications:

1. For Jewellery purchased before 2001, should the gold price of 31.3.2001 or 31.3.2002 be taken as base ?

2. From which website, I should take the base prices of Gold such as 2001,2002, 2003, 2004, 2005 (all on 31st March)?

3. For Jewellery purchased (say) in Aug 2005 , whether the price as on 31.3.2005 (before the corresponding FY or 31.3.2006 (the last date of the corresponding FY) should be taken?

4. I find the cost Inflation Index is also for FY. Am I correct if I take the Inflation Index of the corresponding FY?