The Allnatt Diamond

Cushion cut diamond, weighting 101.29 carats, graded Fancy Vivid Yellow by the Gemological Institute of America (GIA). In May 1996, the Allnatt was resold at auction by Christie's in Geneva for $3,043,496 US. The gem was on loan to the Smithsonian National Museum of Natural History in Washington D.C. and was on display until 23 September, 2007.

The Sancy 55.23 ct., a pale Yellow Diamond

This yellow diamond was once believed to have belonged to the Great Moguls of antiquity, but is more likely of Indian origin. In 1906 it was purchased by William Waldorf Astor, 1st Viscount Astor. The noble Astor family held it for 72 years until it was sold to the Louvre for $1 million in 1978. The Sancy now rests in the Apollo Gallery, sharing attention with the likes of the Regent and the Hortensia.

The Largest Yellow Diamond

The largest ever known yellow diamond was Fancy Deep Brownish Yellow, weighting 407.48 carat.

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