10/06/2026
A 1.35 ct Fancy Vivid Blue diamond. A 16.40 ct Kashmir sapphire.
Two exceptional gemstones—with matching auction estimates of up to approximately US$3.5 million each.
The sapphire weighs approximately 12.1 times as much as the diamond. Yet both rings share the same upper estimate.
A striking reminder: carat weight tells you how much a gemstone weighs. It doesn’t tell you the whole story of its value. 💎
Both deserve admiration. This comparison puts the extraordinary appeal of natural fancy color diamonds into perspective.
Did you expect the smaller stone to command the same upper estimate? Tell us below.
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Source: Phillips, The Geneva Jewels Auction: VII, 9 November 2026. Figures are pre-sale estimates, not sale results. Photography digitally edited; final slide uses AI-generated illustrations, not to scale.
Small in size. Extraordinary in color. 💎
This 1.35 ct Fancy Vivid Blue diamond ring carries an auction estimate of CHF 1.8–2.86 million—a reminder that carat weight tells only part of the story.
Would you have guessed its estimate?
16.40 carats of remarkable blue. 💙
This Kashmir sapphire ring, with no indications of heating, carries the same CHF 1.8–2.86 million auction estimate as the 1.35 ct blue diamond ring.
Which draws you in first: its color or its presence?
12.1× the carat weight. The same auction estimate.
Two exceptional gemstones showing why size alone cannot explain value. Natural color, rarity and individual character deserve a closer look. 💎
Did this comparison change how you think about carat weight?
