Isha Ambani’s diamond necklace is the strongest reported contender for the most expensive jewel at the 2025 Met Gala: The Diamond Collective described it as a $100 million necklace, while Vogue reported its 80.73-carat center diamond. That $100 million figure is an outlet-reported estimate, not a disclosed independent appraisal, so there is no verified price ranking for the gala’s jewelry.
How much was Isha Ambani’s Met Gala necklace worth?
The Diamond Collective described Ambani’s necklace as worth $100 million and reported that it contains 481.42 carats of natural colorless diamonds, including an 80.73-carat cushion-cut center stone. The outlet’s captured article does not show a publication date or disclose an appraisal basis; treat the dollar figure as its estimate, not a confirmed market or insured value. The Diamond Collective’s account also says the design pays homage to a Cartier necklace made for the Maharaja of Nawanagar in 1931, an original that was later dismantled. Ambani’s gala necklace is not that historical Cartier jewel.
Vogue independently reported the 80.73-carat cushion-cut center diamond and said the necklace came from Ambani’s personal collection. Its May 6, 2025 overview places the jewelry among the gala’s looks for “Superfine: Tailoring Black Style.” Vogue’s Met Gala jewelry overview does not give the necklace a price.
What other reported price stood out?
Heidi Klum’s Lorraine Schwartz stone
Heidi Klum said the stone she wore from Lorraine Schwartz was worth $10 million. Complex reported her remark on May 6, 2025, quoting her description of it as “just on a fishing wire.” This is Klum’s statement, not an independently established appraisal or a comparable valuation of her full jewelry look. Complex’s report on Klum’s necklace attributes the claim directly to her.
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How do the other headline jewels compare?
Several standout pieces were identified by designer and stones rather than by price. Harper’s Bazaar’s coverage gives details for these looks, but not comparable dollar valuations; carat weight alone cannot establish which jewel was more expensive.
| Attendee and jewel | Reported stone detail | Price established in cited coverage |
|---|---|---|
| A$AP Rocky, Bulgari Polychroma necklace | 12.29-carat pear ruby | Not stated by Harper’s Bazaar |
| Gabrielle Union, Tiffany & Co. Blue Book “Ray of Light” necklace | More than 80 total carats of diamonds and spinels | Not stated by Harper’s Bazaar |
| Dua Lipa, Chanel Eternal N°5 necklace | Center diamond over 10 carats | Not stated by Harper’s Bazaar |
| Priyanka Chopra, Bulgari Magnus Emerald necklace | No comparable weight or price stated in the cited roundup | Not stated by Harper’s Bazaar |
Harper’s Bazaar also described A$AP Rocky wearing a 15.34-carat cushion peridot brooch and Halle Berry in a Cartier Tsagaan suite. Its roundup identifies the pieces but does not provide prices that permit a like-for-like ranking. Harper’s Bazaar’s 2025 Met Gala jewelry roundup is useful for identifying these designs, not for establishing their relative value.
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Why there is no definitive “most expensive” ranking
The reported figures answer different questions: the Diamond Collective supplies an estimate for Ambani’s entire necklace, while Klum gives a price for a stone she wore. The coverage does not establish that either amount comes from a formal appraisal, and the other cited pieces lack comparable prices. A center-stone weight, a jewel’s total carat weight, and a reported dollar estimate are distinct measures; none alone yields a reliable price ranking.
Accordingly, Ambani’s necklace is the strongest candidate in the available reporting, with the important qualification that its $100 million valuation is attributed to the Diamond Collective and is not independently substantiated in the cited account. No official Met source or other cited authority provides an audited or definitive list of the gala’s most expensive jewelry.
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