Largest Martian Meteorite Ever Sold on Earth for Over $5 Million

The largest piece of Mars ever discovered on Earth was auctioned for approximately $5.3 million, surpassing initial estimates. The 54-pound (25-kilogram) meteorite, named NWA 16788, was found in the Sahara Desert of Niger in November 2023 by a meteorite collector. It traveled nearly 140 million miles from Mars, having been ejected by a massive asteroid impact, before landing on Earth.

Measurements indicate that this meteorite is about 70% larger than the next largest Martian fragment ever recovered. It is notably distinct, with a reddish-brown and gray appearance and a glassy surface likely caused by intense heat during atmospheric entry. The piece measures roughly 15 inches by 11 inches by 6 inches.

Examined by specialized laboratories, tests confirmed the meteorite’s Martian origin by matching its chemical composition with samples found during the Viking missions in 1976. Classified as an olivine-microgabbroic shergottite, it indicates slow-cooling volcanic activity from Mars, containing minerals such as pyroxene and olivine.

With only about 400 Martian meteorites identified among the over 77,000 known meteorites, this specimen is an exceptionally rare find. Its rarity, size, and distinctive features contributed to the record-breaking sale price. The meteorite was previously displayed at the Italian Space Agency in Rome.

Traffic in Dinosaur Skeletons Reaches New Heights

The auction also featured a juvenile Ceratosaurus nasicornis dinosaur skeleton, which sold for over $30 million. The skeleton, more than 6 feet tall and nearly 11 feet long, was assembled from approximately 140 fossil bones. It is believed to date back to the late Jurassic period, around 150 million years ago, and was recently acquired by a fossil preparation company based in Utah.

This sale was part of Sotheby’s Geek Week 2025, showcasing 122 rare items including fossils, meteorites, and minerals. The dinosaur skeleton’s substantial price reflected its scientific significance and rarity, making it a highlight of the auction.