Yellow isn't Yellow

An answer to the often-asked questions about colored diamonds versus other colored precious stones:

Yellow Sapphire Ring (13.96ct, estimate: $15,000-$20,000)
(lot 188)

Yellow Diamond Ring (5ct, estimate: $60,000-$80,000)
(lot 153)

Both are for sale at Sotheby's(see previous) Feb. 4 auction in New York.
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