05 May 2010
Practically speaking there are no such criteria to fix the prices of diamonds. For Wealth Tax purpose; many advocates have used 10% appreciation per annum.
These are not branded items.
Loose diamonds were sold without any certificate.
Recently; it is now practice that loose diamonds are sold under Certificate which shows the quality of stone and cut (with photo of the diamond). But this one is followed for very costly diamonds.
Further, now-a-days; diamonds studded with gold/platinum/colour gold etc. (called diamond jewellery) are HALL MARKED.
Hall mark is an assurance like ISI mark.
In your case; better go to APPROVED VALUER and get it done to avoid litigation in future.