The “Largest Piece of Mars on Earth” just sold at auction for about $5.3 million— $5,296,000, to be exact. Popular Science has reached out to Sotheby’s for confirmation of the sale price.

A 54-pound meteorite from Mars sold for more than $5 million when it went up for auction on Wednesday at Sotheby's.

A spirited 15-minute bidding war between online and phone participants ultimately landed the ultra-rare specimen with an anonymous buyer, far surpassing its initial estimate of $2-4 million.