The extremely rare nine carat pink diamond, dated to 1910, is believed by Christie's to have been given to the one-time socialite by her mother, Anna, who married 62-year-old William A Clark in secret when she was just 23-years-old in 1902.

They include a 9-carat pink diamond ring that Huguette inherited from her mother, which is expected to bring between $6 million and $8 million at the April 17 sale. Another whopper of a diamond ring comes in at 19 carats and was made by Cartier.

A Belle Époque Cushion-Cut Fancy Vivid Purplish pink diamond Ring of 9.00 Carats by Dreicer & Co. Circa 1910. Valued at $6000000-8000000 Photo: Contributed Photo / CT FILE - This Aug. 11, 1930 file photo shows Mrs. Huguette Clark Gower, daughter of the ...

Many important and extremely rare blue and pink diamonds, Colombian emeralds, Burmese rubies and Kashmir sapphires, natural pearls and exquisite jadeite jewelry mark this auction, which altogether includes 358 lots and a total presale estimate of $75 ...

The day features excellent racing including the last chance for 2 year olds to qualify for the AAMI Golden Slipper in the Mondial pink diamond Magic Night Stakes and Pago Pago Stakes. Experience thoroughbred racing at its most thrilling and get your ...

And although the New York Post reported the main stone is a pink diamond, our jewelry expert disagrees. ?I don't think it's pink, but if it is that could easily add another $100000 to $150000 to the overall cost.? If that's the engagement ring, ...

Moments ago though, the 24-year-old reality star was spotted in Jersey City wearing a brand new pink diamond ring! So, is it an engagement ring? Looks like it could be costume jewelry to us, but you never know with her.

Buenos Aires train crash A commuter train crashed into the Once train station during rush hour in Buenos Aires, Wednesday. Tr... PHOTOS: Rare pink diamond A 12.76 carat pink diamond - the largest of the rare and precious stones ever found in Australia.

A rare pink diamond from Lugaro Jewellers sparkled on Avatar star Zoe Saldana, who paired the ring with a black satin-and-sheer Mario Schwab gown. Lugaro's 2.75-carat sparkler is the largest pink diamond ever discovered in Canada.

by Alison Cavatore In the East Kimberley region of West Australia, a magnificent 12.76 carat pink diamond was unearthed at the Argyle diamond mine, which is one of the world's largest producers of pink diamonds. This newly-found gem, however, ...