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Luciana Barbosa

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Welcome to!

To register to bid, click the link on the left.

This site offers multiple auctions, to give you a wider range of bidding opportunities.

Some of the auctions include listing from multiple dealers; Others, such as Marin Mineral Auctions and the Barbosa Auctions, are dedicated to listings from those dealers.

The JitterRocks! auction is offered once per week and features minerals and agates, from a variety of dealers.

The Special Auction is used for occasions such as a benefit auction, an auction or series of auctions related to a specific show such as the Tucson Show, or a single dealer's selection of minerals.

The Dealer's Choice Auction is offered once per week.

All of the auctions use an optional proxy bidding system.

Should you encounter a problem using the site, please send an email to

This website, created by John Veevaert, was one of the first of its kind on the the world wide web.

Thank you!,

Luciana Barbosa



Recent and Upcoming Auctions

All times are PDT/PST - Pacific Time Zone (USA)
Click on the hyperlinked link to get to the auction of interest

The current auction on each site is highlighted in green

Barbosa Auction
OpensStarts to Close
5.18 Barbosa May 18 10:00 AM May 24 6:20 PM
5.25 Barbosa May 25 10:00 AM May 31 6:20 PM
6.01 Barbosa Jun 1 10:00 AM Jun 7 6:20 PM
6.08 Barbosa Jun 8 10:00 AM Jun 14 6:20 PM

Marin Minerals Auction
OpensStarts to Close
Marin Minerals Auction #881 May 19 8:00 AM May 25 6:30 PM
Marin Minerals Auction #882 May 26 8:00 AM Jun 1 6:30 PM
Marin Minerals Auction #883 Jun 2 8:00 AM Jun 8 6:30 PM
Marin Minerals Auction #884 Jun 9 8:00 AM Jun 15 6:30 PM

Dealer's Choice Auction
OpensStarts to Close
5.24 DC May 24 10:00 AM May 30 5:00 PM
5.31 DC May 31 10:00 AM Jun 6 5:00 PM

OpensStarts to Close

Special Auction
OpensStarts to Close

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