Explore the largest and most diverse single-source site for fine minerals and mineral specimens at auction. This is a fine mineral and special collection auction platform in addition to an inventory liquidation venue where you can find thousands of mineral and gem specimens for auction from well-known collections, including rare species, classic finds, and more! Additionally, we have hosted multiple auctions benefitting organizations such as the Rice Museum, mindat.org, Rocks & Minerals, and The Mineralogical Record.

Enjoy low minimum bids, ZERO buyers fees, and an easy-to-use online bidding system.


Why shop the auctions?

When buying collections, we often need to purchase an entire collection in order to acquire a few key pieces. We then end up with a surplus of great specimens that we can offer at low prices to help liquidate inventory and clear space in our warehouse to make room for new collections. Additionally, we occasionally decide to offer special collections in their entirety via auctions.

Want to keep current on offerings? Follow the auctions on Instagram @mineralauctions for daily posts of pieces up for auction.

However, before you go, have you searched our website to see if we have pieces for sale on iRocks.com that might fit your collection? For example, try searching for all available mineral specimens for $500 or less, exploring galleries of our recently posted minerals, hunting for new treasures in our themed galleries, or browsing all of our listings at your own pace with custom filters.

The Arkenstone loves participating in auctions, too! Watch Dr. Rob Lavinsky as he bids and wins the Madonna Rose Quartz, the signature piece from Heritage Auction's 2013 Hoppel 1 Mineral Auction.