Dallas Symposium 2020 - Saturday Benefit Auction

Thanks for exploring this year's Dallas Symposium Benefit Auctions, with separate auction lots closing on Saturday, Aug 22 and Sunday, Aug 23. Auction proceeds benefit Mineralogical Record, Rocks & Minerals, Tucson Gem and Mineral Society, and mindat.org. 

We have 60+ items available here, including fine minerals, unique experiences, and special mineralia! 


Billing for this auction will occur on Monday, August 24, for payment using PayPal or credit card directly to MineralAuctions.com. Shipping will be billed at cost, or please contact brandy@mineralauctions.com if you'd like to plan on picking up items at future shows or during a stop through Dallas. In accordance with Texas law, sales tax must be charged for orders shipping within Texas. 

Filter By

Sapphire Crystal (doubly-terminated floater) with painting
Ratnapura, Sabaragamuwa Province, Sri Lanka
3.9 x 1.0 x 0.8 cm
Winning Bid: $1,200
Cavansite on Stilbite
Wagholi Quarry, near Pune, Maharashtra State, India
7.0 x 6.5 x 5.0 cm
Winning Bid: $555
Fluorite, Ex. Tom Campbell
Panasquiera, Castelo Branco, Portugal
3.7 x 2.4 x 2.0 cm
Winning Bid: $315
Liddicoatite Butterfly Slices
on custom base
Anjanabonoina, Betafo, Madagascar
12.0 x 7.0 x 0.5 cm
Winning Bid: $1,509
Vivianite matrix specimen (rare old locale!), Ex. Stanford University Museum
Carrock Fell, Cumberland, England, UK
7.0 x 5.0 x 3.0 cm
Winning Bid: $194
Indicolite Tourmaline (circa 1960s)
- 379 grams
Santa Rosa Mine, Minas Gerais, Brazil
7.5 x 6.5 x 4.5 cm
Winning Bid: $1,051
Pyrite (superb old classic, museum-sized!)
Leonard Mine, Butte, Silverbow County, Montana, USA
15.0 x 12.0 x 4.5 cm
Winning Bid: $850
Labradorite var. Sunstone, Ex. Jim Houran
Double Eagle Mine, near Plush, Lake County, Oregon, USA
2.2 x 1.0 x 0.6 cm (11.42 cts)
Winning Bid: $433
Unusual large Smithsonite with Goethite
Choix, Sinaloa, Mexico
15.0 x 11.0 x 8.0 cm
Winning Bid: $653
Okenite with Gyrolite in pocket
(old classic finds from 1990s!)
Pune District, Maharashtra, India
22.0 x 15.0 x 11.0 cm
Winning Bid: $625
Smithsonite ps. Calcite with Hemimorphite, Ex. Gary Weaver
Ojuela Mine, Mapimi, Durango, Mexico
11.0 x 8.0 x 4.0 cm
Winning Bid: $217
Calcite (doubly-terminated) Ex. Rock Currier
Elmwood Mine, Carthage, Smith Co., Tennessee, USA
6.0 x 4.0 x 2.5 cm
Winning Bid: $470
Copper - historic USA classic
Pewabic Lode, Houghton County, Keweenaw, Michigan, USA
11.0 x 6.0 x 5.0 cm
Winning Bid: $1,175
Pseudoboleite and Cumengeite on Boleite, Ex. Rock Currier
Santa Rosalia, Boleo, Baja California, Mexico
1.4 x 1.4 x 1.4 cm
Winning Bid: $691
Tourmaline (1960's classic find!), Ex. Rock Currier
Golconda Mine, Governador Valadares, Minas Gerais, Brazil
2.8 x 1.3 x 1 cm
Winning Bid: $925
Corundum var. Ruby (synthetic - Kashon Labs, 1990s)
Austin, Texas, USA
2.6 x 2.0 x 1.7 cm
Winning Bid: $365
Beryl var. Heliodor, Ex. Jim Houran
Ray Mica Mine, Yancy County, North Carolina, USA
3.2 x 2.8 x 1.5 cm
Winning Bid: $110
Rhodochrosite with Quartz
Sweet Home Mine, Alma, Colorado, USA
5.0 x 3.5 x 3.0 cm
Winning Bid: $1,600
Zircon in matrix, Ex. Gene Meieran
Haramosh Mountains, Pakistan
3.8 x 3.7 x 2.0 cm
Winning Bid: $110
Garnet gem - USA origin! Ex. Jim Houran
Montana, USA
1.35 x 0.9 x 0.8 cm
Winning Bid: $575