The newly discovered pink diamond, said to be exceedingly rare, was probably cut in the 18th century and worth at least USD 5 million.
The diamond is from Telangana's Golconda region which is known for the mines that have produced some of the world's most famous gems including the Koh-i-Noor diamond.
The Bureau of Customs (BOC) and the Presidential Commission on Good Government (PCGG) are working on the appraisal and auction of the jewelry collection of Imelda who is currently a member of Congress, Manila Bulletin reported.
The agencies would establish an inter-agency working group, the sole body to supervise and coordinate with the auction process with a re-assessment of the jewelry set.
An appraisal of the three sets of jewelry by Christie's Auction House in 1991 was pegged at USD 8.57 million.
It is seen as the first step made by the Benigno Aquino government towards auctioning off the billion-dollar jewelry collection Marcos. The revenues generated would be deposited to the National Treasury.
