Works by the renowned Buccellati family lead a single-owner design sale in New York on April 20.
Early Arabic translations of the works of Ptolemy and Euclid hit the block in London April 25.
Jewelry specialist Quig Bruning talks top auction trends and names his favorite lots from two big spring sales.
The gem has been described as a “masterpiece of nature.”
This legendary diamond has been passed down through royal families for 300 years.
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