A second group of artworks from the collection of the late fashion designer Yves Saint Laurent and his partner Pierre Berge is expected to fetch up to 4 million euros ($5.7 million) when it appears for sale in November.

Christie’s International’s YSL Part II sale, held in collaboration with Pierre Berge, will take place at its Paris auction rooms on November 17, 18 and 19.

Almost 1,200 pieces will be offered, about half of them from the couple’s coastal retreat, Chateau Gabriel, at Benerville near Deauville in Normandy.

A five-carat cushion-cut pink diamond known as “The Vivid Pink” is set to lead Christie’s Hong Kong sale this fall.

According to a media release, the Vivid Pink is the largest potentially flawless fancy-vivid-pink diamond ever offered for sale at auction.

Property of a private collector and set in a ring by renowned jeweler Laurence Graff, the diamond is expected to fetch between $5-$7 million.

A giant gem will hit the auction block in New York this autumn with the sale of the 32-carat emerald-cut Annenberg diamond, which is expected to fetch as much at $5 million.

The flawless ring-mounted diamond, owned by philanthropist Lee Annenberg, widow of publishing magnate Walter Annenberg, leads the auction house’s magnificent jewels sale on October 21.

“Gems of this size are extremely rare, and their presence on the market is always an important event in the world of diamonds,” said Rahul Kadakia, Christie’s head of jewelry.

A painting by Chinese artist Sanyu fetched a record HK$42.1 ($5.4 million) at a Hong Kong auction as bidders fought for lots, betting that the worst of Asia’s art-market slump is over.

Of the 38 lots offered last week at Christie’s International’s top selection of Asian art, 34 sold, raising a combined HK$181.7 million, according to the London-based auction house.

That’s about twice the company’s presale estimate, said Kate Malin, a Christie’s spokeswoman.

Christie’s is offering a rare, 100-million-year-old petrified shell of an extinct Canadian marine creature.

This fossilized ammonite is expected to fetch $70,000 at an auction next week in France.

The fossil has naturally occurring iridescent colors created when the original shell substance turned into a mineral called aragonite.

A small brown leather armchair once owned by Yves Saint Laurent has reportedly sold for £19.4 million (nearly $28 million), making it the most expensive piece of 20th-century design to ever be auctioned.

The armchair, by Irish designer Eileen Gray was only expected to reach around £3 mllion at Christie’s in Paris. It was bought by specialist Paris art gallery Robert and Cheska Vallois.

The unique piece – known as the “dragons’ armchair because of the ornate sculptures on its sweeping armrests – was created between 1917 and 1919 by Miss Gray.