The 100.09ct Graff Vivid Yellow diamond features a Fancy Vivid Yellow, Natural Colour, VS2 Clarity diamond. Sold for CHF 14.5million (estimate: CHF 13.4- 22.3million). Image by: Sothebys.

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The 100.09ct Graff Vivid Yellow diamond features a Fancy Vivid Yellow, Natural Colour, VS2 Clarity diamond. Sold for CHF 14.5million (estimate: CHF 13.4- 22.3million). Image by: Sothebys.

The 100.09ct Graff Vivid Yellow diamond features a Fancy Vivid Yellow, Natural Colour, VS2 Clarity diamond. Sold for CHF 14.5million (estimate: CHF 13.4- 22.3million). Image by: Sothebys.