AGTA

Mineralauctions.com (a subsidiary of The Arkenstone, AGTA firm-member) and the American Gem Trade Association are pleased to announce new featured AGTA-member gemstone auctions hosted online for worldwide participation. Enjoy a selection of fine gemstones from trusted and vetted dealers from the American Gem Trade Association, including tourmalines, corundums, zircons, grandiderite, and more!

If you weren't able to make it to the Tucson shows, here's a great chance to get gemstones live, online, from the AGTA GemFair Tucson!

Tourmaline
Himalaya Mine, San Diego, California, USA
26.0 x 21.0 x 14.0 mm, 48.70 ct
Winning Bid: $875
Aquamarine
Minas Gerais, Brazil
15.81 x 13.55 mm, 11.34 ct
Winning Bid: $885
Azurite with Malachite
Morenci, Arizona, USA
6.1 x 4.0 x 0.9 cm, 292.66 ct
Winning Bid: $325
Malachite
Morenci, Arizona, USA
7.3 x 7.1 x 0.4 cm, 161.82 ct
Winning Bid: $545
Boulder Opal
Queensland, Australia
33.9 x 22.8 x 3.9 mm, 34.6 ct
Winning Bid: $300
Tourmaline
Brazil
8.59 x 7.0 x 4.94 mm, 2.76 ct
Winning Bid: $864
Burgundy Tourmaline
Madagascar
20.22 x 14.21 x 9.05 mm, 19.03 ct
Winning Bid: $610
Heliodor (Yellow Beryl)
Minas Gerais, Brazil
20.5 x 11.9 mm, 9.44 ct
Winning Bid: $409
Emerald
Brumado, Bahia, Brazil
11.47 x 11.27 x 7.16 mm, 6.52 ct
Winning Bid: $400
Zircon
Cambodia
19.0 x 12.8 mm, 15.78 ct
Winning Bid: $902
Tourmaline Slices (teal!)
Minas Gerais, Brazil
22.0 x 20.0 x 3.0 mm, each, 34.93 ct
Winning Bid: $575
Kunzite
Nigeria
21.51 x 11.19 x 10.63 mm, 18.60 ct
Winning Bid: $910
Tourmaline (Bicolor Cat's Eye)
Himalaya Mine, San Diego, California, USA
16.94 x 16.74 x 11.90 mm, 26.90 ct
Winning Bid: $995
Watermelon Tourmaline Slices
Minas Gerais, Brazil
19.0 x 16.0 x 4.5 mm, 34.25 tcw (2 pcs)
Winning Bid: $600
Ametrine
Anahi Mine, Bolivia
19.0 x 19.0 mm, 17.72 ct
Winning Bid: $580
Titanite (Sphene)
Madagascar
11.0 x 9.5 mm, 4.64 ct
Winning Bid: $465
Opal - Natural
Welo, Ethiopia
22.5 x 18.7 x 11.0 mm, 18.53 ct
Winning Bid: $775
Emerald
Colombia
6.3 x 5.3 x 3.11 mm, 0.84 ct
Winning Bid: $1,024
Watermelon Tourmaline
Minas Gerais, Brazil
15.8 x 8.4 x 5.7 mm, 6.22 ct
Winning Bid: $345
Sapphire Cabochons
Sri Lanka
Approx. 4.5 mm each, 19.7 ct
Winning Bid: $210
Tanzanite
Merelani Hills, Manyara, Tanzania
6.8 x 6.3 x 3.8 mm, 1.28 ct
Winning Bid: $425
Rhodolite
Taita, Kenya
9.9 x 7.4 x 4.4 mm, 2.31 ct
Winning Bid: $330
Zircon
Cambodia
7.0 x 7.0 mm, 1.72 ct
Winning Bid: $130
Demantoid Garnet
Antetezambato, Ambanja Dist., Antsiranana Prov., Madagascar
8.0 x 5.0 mm, 2.26 ct
Winning Bid: $580
Zircon
Cambodia
13.0 x 9.5 x 8.5 mm, 10.64 ct
Winning Bid: $1,100
Tourmaline
Minas Gerais, Brazil
12.9 x 12.8 mm, 11.40 ct
Winning Bid: $1,100
Peridot
Pakistan
9.46 x 8.24 mm, 3.51 ct
Winning Bid: $575
Grandidierite
Fort Dauphin, Tulear Prov., Madagascar
11.9 x 10.5 x 6.4 mm, 4.96 ct
Winning Bid: $675
Bicolor Tourmaline
Brazil
13.8 x 6.0 cm, 3.49 ct
Winning Bid: $385
Ruby
Burma/Myanmar
5.6 x 5.6 mm, 0.85 ct
Winning Bid: $410