Christie’s

The 228.31-carat pear-shaped diamond, nicknamed “The Rock” is expected to fetch between $20 million to $30 million, according to Christie’s.   It was mined and polished in South Africa over two decades ago and, at the approximate size of…

Basquiat’s 1982 triptych Portrait of the Artist as a Young Derelict (1982) will be offered in Christie’s contemporary art evening sale. Bidding for the painting — which is almost seven-foot wide — will start at around $30 million according…