Auction link: Martian Meteorite — NWA 16788
The pre-auction estimate is 2 - 4 million USD. This market resolves YES if the final sale price listed on the Sotheby's website is >5 million USD.
Resolution details
Example from a past auction: this painting by Gentilesch has a "price realised" of USD 982,800. This is the equivalent number I will use—whatever is displayed by the auction page.
Note that the final listed sale price typically includes the buyer's premium (and potentially other fees).
If no sale price is listed after the auction (online or by other media sources), resolves NO by default.
Details

AN INCREDIBLY RARE DISCOVERY – THE LARGEST PIECE OF MARS ON EARTH, EJECTED FROM THE MARTIAN SURFACE BY A MASSIVE ASTEROID STRIKE, JOURNEYED 140 MILLION MILES THROUGH SPACE, AND HURTLED THROUGH EARTH’S ATMOSPHERE BEFORE CRASHING IN THE SAHARA DESERT
Discovered on 16 November 2023 by a meteorite hunter in Niger’s remote Agadez Region, NWA 16788 is approximately 70% larger than the next largest piece of Mars found on Earth. Pieces of Mars are unbelievably rare: of the more than 77,000 officially recognized meteorites, only 400 are Martian meteorites, with an approximate combined weight of 374 kg (825 pounds). Weighing 24.67 kilograms, NWA 16788 represents approximately 6.5% of all Martian material currently known. (Lot essay)