Mineral Auction Rules, Regs & Proxy Bid Instructions

Please read the following rules and regulations

First and foremost, your bid is a contract just like on eBay or through any of the major auction houses. Contact us before bidding if you are unclear on how MineralAuctions.com operates.

You must log in to bid. You cannot bid without a registered username, nor can you bid until the auction actually starts, at which time the BID box will appear on the details page of each auction item. To get a login name, simply register some basic information, including your full name and email address (required), by clicking on the link in the top right that says "REGISTER" or by clicking here. You can choose your own login name - please note that your username will not show up anywhere publicly on the site, and will only show up to you personally when you're logged in the site. To everyone else, your bids will be anonymous. Your password and login will ensure that you have a unique auction user profile. NO MINORS (under 18) are allowed for liability reasons.


We offer live auctions with extended bidding. If no bid is made within 3 minutes of the posted auction close time, the auction will close at that time. If a bid is placed during the final 3 minutes, the auction is automatically extended 3 more minutes. This extension of live bidding continues until no bids have been made for a period of 3 minutes. This ensures that sniping (bidding at the last second of an auction) cannot occur and levels the playing field for all participants.

The minimum bid for the first bidder is the starting bid of $10 (unless indicated otherwise in special higher-reserve auctions), and from there you can bid incrementally by one or more "bid increments" as you desire. The bid increments are:

$5 for bids of $10 to $50
$10 for bids of $51 to $500
$25 for bids of $501 to $1000
$50 for bids of $1001 to $5000 
$100 for bids of $5001 to $10000 
$250 for bids of $10001 to $25000
$500 for bids of 

The items will close at their appointed times, UNLESS a bid is placed within 3 minutes of the closing. In that case, the auction will extend by 3 minutes and live bidding will continue until a 3 minute time gap occurs between bids. In other words, DO NOT LOG OUT ASSUMING YOU HAVE WON AT CLOSING TIME LISTED if you bid within 3 minutes of that closing time!

NOTE: EACH ITEM closes individually and each item will feature its own independent countdown clock. Please be sure to look at the time on the website clock located on each item, which may differ from your own time zone!

In the event of auction failure, the following may occur: If the problem affects closing in a serious manner, the auction will be shut down and bidding will resume once the problem has been fixed (most likely to resume at the same time the following day, or the following week. I hope these guidelines do not have to come into play, but if an error occurs, at least we will set a clear precedent for a "fix".


Proxy bidding is a way to bid on an item without actually being present, or at least without paying constant attention. Simply enter the highest price you are willing to bid for a particular specimen, and the auction software will automatically bid incrementally on your behalf against other bidders up to that maximum price. The computer will outbid other bids until it reaches your maximum price. The MineralAuctions.com staff does not have access to customers' proxy bids, so we are unable to view or modify proxy bids on your behalf.

 Some advantages of proxy bidding:

  • You need not be present to bid.

  • If the auction closes at an inconvenient time, the computer can bid on your behalf.

  • If you want to bid on multiple items, this reduces the need to watch all of them constantly so you can concentrate on the priorities.

  • For international customers, this eliminates the need to personally battle incrementally with somebody who is getting up in the morning halfway across the world while you are tired at the end of a long day!

A) Auction current bid is $20

B) User 1 comes along and doesn't want to play the bid-war game, or cannot attend the end of the auction, and so he/she PROXY BIDS for $100. The current bid is updated to $25 (i.e. raised by one increment) and User 1 will win the specimen for $25-100 depending on competing bids, so long as nobody else bids higher than $100.

C) User 2 comes and bids for $30. Because $30 is less than $100 , there is a bid added for User 2 for $30 and a PROXY BID added for user 1 for $35, and therefore the auction current bid is updated to $35 for User 1.

D) User 3 comes and bids for $105, user 3 is now the high bidder. User 3 possibly tested the limits of the existing proxy by getting up to $100 in increments , and then further guessed all he had to bid to win was $105, but nevertheless finally found the number to win! Any number between $101-104 would have won him the bid and shown as $101 , or he could win with $105.


NOTE: IF TWO PROXY BIDS COMPETE, THE HIGHER ONE WINS EVEN IF BY A NON-INCREMENTAL AMOUNT. In other words, if you are bidding and enter a proxy bid which is COINCIDENTALLY within a $-increment increase of the previous bidder's highest proxy bid allowed, you can win by less than $5 (even by only $1). This rarely occurs, by coincidence. If your bid is the one overturned in a battle of two proxy bids, you will get an overbid notice as normal, and have a chance to bid again.

By accepting our Terms and Conditions, you also agree to periodic communications from The Arkenstone and MineralAuctions.com regarding the weekly auctions or other events, such as the Dallas Mineral Collecting Symposium or mineral shows that give us a chance to meet customers in person. You may unsubscribe at any time and your information will never be sold or provided to external parties.

If you're looking for a specific fine mineral that you don't see up for auction, check out our retail site at www.iRocks.com.

The Arkenstone has thousands of fine minerals available for sale and specializes in assisting customers curate private mineral collections.