Alternative Asset Data

for Luxury Collectibles

ALT/FNDATA is the market data platform for passion investments: realized auction prices, valuations and tax tools across watches, art, cars, jewelry and wine.

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Kim Kardashian

Kim Kardashian

Jewelry

A prolific buyer of historic jewels at auction. In January 2023 she won a fierce Sotheby’s bidding war for Princess Diana’s “Attallah Cross” — the amethyst-and-diamond pendant Diana wore in 1987, one of the most recognisable royal jewels ever to reach the market.

Realized at sale$197K
Estimated today modeled~$160K
−19%
Modeled value over timemodeled

Realized price carried forward by ALT/FNDATA’s trophy-tier price trend for each lot’s category.

A modeled market-level estimate, not an appraisal. Individual pieces vary.

Documented sales

Princess Diana’s “Attallah Cross” amethyst-and-diamond pendant (Garrard, 1920s)
Princess Diana’s “Attallah Cross” amethyst-and-diamond pendant (Garrard, 1920s) Confirmed
Sotheby's·Royal and Noble, London · Jan 18, 2023
Worn by Princess Diana at a 1987 gala and unseen publicly after her death until this sale. Kardashian’s winning bid topped a four-bidder battle, well over the £80,000–£120,000 estimate.
Artnet News Image: Sotheby's
Realized£163,800 (~$197,453)

“Estimated today” is a modeled figure, not an appraisal: each realized price is adjusted by the change in ALT/FNDATA’s trophy-tier price level for its category (the median of comparable high-value lots, from the sale year to the present). It is a market-level estimate; individual pieces vary, and categories without enough comparable high-value data are shown as insufficient to estimate.

Notable historical collection. The realized figures are public auction results, from the dates shown. “Estimated today” and the value chart are modeled market estimates, not a live valuation or appraisal, and not a current holding.
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