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Size + Measurements
SIZE DEFINITIONS
Generic Dimension
Maximum Dimension
(Inches)
Maximum Dimension
(Centimeters)
Thumbnail
1 1/4
3
Miniature
2
5.0
Small Cabinet
3 3/4
9.4
Cabinet
> 3 3/4
> 9.4
While Toenail is not an official "competition" size classification, sometimes thumbnail specimens are just a bit too big for competition rules, often referred to as "boxbusters." There is no standard size for toenails, but they overlap a thumbnail and a miniature.
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Upcoming Billing Dates
(following auction sets)
January 13th/14th (December 28th, January 4th and January 9th auction sets) *Billing will now be on Monday/Tuesday due to inclement weather*
January 24th/27th (January 11th, January 16th, January 18th and 23rd auction sets)
February 7th (January 30th, February 2nd and 6th auction sets)
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WEEKLY MINERAL & GEM AUCTIONS!
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Special Jack Halpern Mineral Collection Auction
Mineral / 51 Items
Ends January 18th 6:30 pm
Special Mindat Benefit Auction!
Mineral / 25 Items
Ends January 23rd 6:30 pm
Special Auction - $249 Reserve Specimens
Mineral / 39 Items
Ends January 23rd 6:45 pm
Assorted Gemstones Auction!
Gem / 32 Items
Ends January 23rd 7:00 pm
Category
Minerals
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Current Bid: Low to High
Current Bid: High to Low
Quartz var: Rose
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Ex. Jack Halpern
11.1 x 8.7 x 1.1 cm
Current Bid:
$575
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Schorl on Albite (fine locality specimen)
Shengus, Haramosh Mts., Skardu Dist., Baltistan, Gilgit-Baltistan, Pakistan
Ex. Jack Halpern
11.2 x 8.7 x 4.2 cm
Current Bid:
$1,000
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Fluorite with Calcite (2021 find)
Yaogangxian Mine, Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou, Hunan, China
Ex. Jack Halpern
7.5 x 6.7 x 6.6 cm
Current Bid:
$121
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Hematite (fine crystals)
N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa
Ex. Jack Halpern
6.2 x 5.2 x 2.2 cm
Current Bid:
$355
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Vanadinite (classic material)
ACF Mine, Mibladen, Aït Oufella Caïdat, Midelt Cercle, Midelt Province, Drâa-Tafilalet Region, Morocco
Ex. Jack Halpern
4.9 x 1.3 x 0.8 cm
Current Bid:
$62
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Azurite (historic material)
Chessy Copper Mines, Chessy, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France (Type Locality)
Ex. Jack Halpern
4.7 x 3.2 x 2.3 cm
Current Bid:
$118
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Amazonite (rich color with white ''stripes'' and ''caps'') (Mined: 1984)
R. A. Kosnar ''Stripe Cliam'' near Lake George, Park Co., Colorado, USA
Ex. Jack Halpern; Rich Kosnar
4.7 x 4.1 x 2.3 cm
Current Bid:
$260
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Ferberite with Fluorapatite
Panasqueira, Covilhã, Distrito de Castelo Branco, Portugal
Ex. Jack Halpern
6.3 x 6.2 x 2.7 cm
Current Bid:
$191
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Scheelite with Beryl var: Goshenite and Muscovite
Pingwu Beryl Mine, Huya Township, Mt Xuebaoding, Pingwu Co., Mianyang, Sichuan, China
Ex. Jack Halpern
11.3 x 8.8 x 2.5 cm
Current Bid:
$285
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Quartz (GEM ''floater'' etched crystal)
Tormiq, Haramosh Mts., Roundu District, Gilgit-Baltistan, Pakistan
Ex. Jack Halpern
14.7 x 3.7 x 3.3 cm, 162.0 grams
Current Bid:
$410
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Fluor-uvite - Uvite Series (Tourmaline) on Magnesite
Pedra Preta Pit, Serra das Éguas, Brumado, Bahia, Brazil
Ex. Jack Halpern
5.3 x 5.2 x 3.2 cm
Current Bid:
$662
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Cerussite (reticulated twin)
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Jack Halpern; Mark Rattay
7.1 x 1.6 x 1.6 cm
Current Bid:
$201
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Sulfur on Aragonite (classic material)
Caltanissetta, Caltanissetta Province, Sicily, Italy
Ex. Jack Halpern
9.1 x 7.2 x 2.9 cm
Current Bid:
$154
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Aegirine on Microcline
Mount Malosa, Zomba, Southern Region, Malawi
Ex. Jack Halpern
8.7 x 6.7 x 6.2 cm
Current Bid:
$154
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Quartz var: Amethyst (with ''phantoms'')
Guanajuato, Guanajuato Municipality, Guanajuato, Mexico
Ex. Jack Halpern
10.7 x 8.7 x 4.7 cm
Current Bid:
$185
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Calcite
Charcas, Charcas Municipality, San Luis Potosí, Mexico
Ex. Jack Halpern
8.3 x 5.2 x 3.6 cm
Current Bid:
$75
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Calcite (imitating Fluorite) with Quartz
Jalgaon District, Maharashtra, India
Ex. Jack Halpern
8.7 x 4.7 x 3.7 cm
Current Bid:
$210
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Rutile (twin) (classic material)
Graves Mountain, Lincoln Co., Georgia, USA
Ex. Jack Halpern
6.1 x 3.7 x 3.2 cm
Current Bid:
$185
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Malachite (classic material)
Mashamba West Mine, Sicomines Copper-Cobalt Project, Mutshatsha, Lualaba, DR Congo
Ex. Jack Halpern
6.2 x 6.0 x 1.2 cm
Current Bid:
$210
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Pyrrhotite
Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia
Ex. Jack Halpern
7.2 x 5.2 x 4.7 cm
Current Bid:
$260
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Rhodochrosite
Santa Eulalia Mining District, Aquiles Serdán Municipality, Chihuahua, Mexico
Ex. Jack Halpern
10.7 x 9.2 x 5.0 cm
Current Bid:
$233
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Natrolite (rare locality specimen)
Dean Quarry, The Lizard, St Keverne, Cornwall, England, UK
Ex. Jack Halpern
7.7 x 6.2 x 3.6
Current Bid:
$160
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Dioptase (classic material)
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Jack Halpern
4.7 x 4.2 x 1.8 cm
Current Bid:
$385
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Mimetite (excellent thumbnail)
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Jack Halpern; Mark Rattay
2.7 x 1.4 x 0.8 cm
Current Bid:
$602
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Calcite included with Cuprite var: Chalcotrichite with Malachite
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Jack Halpern; Mark Rattay
7.2 x 3.7 x 2.3 cm
Current Bid:
$1,300
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Ilvaite on Quartz
Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia
Ex. Jack Halpern
7.8 x 5.7 x 4.7 cm
Current Bid:
$234
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Prehnite
Goboboseb Mountains, Brandberg Area, Dâures Constituency, Erongo Region, Namibia
Ex. Jack Halpern
8.6 x 4.7 x 2.2 cm
Current Bid:
$45
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Aragonite var: Lead-bearing Aragonite (formerly ''Tarnowitzite'') (rare locality specimen)
Touissit, Touissit-Bou Beker mining district, Jerada Province, Oriental Region, Morocco
Ex. Jack Halpern; Clifford J. Krueger
6.1 x 4.8 x 2.3 cm
Current Bid:
$98
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Baryte (classic material)
Stoneham, Weld Co., Colorado, USA
Ex. Jack Halpern; Norm Bennett
12.2 x 9.4 x 3.8 cm
Current Bid:
$233
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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Goethite (iridescent)
Filón Sur Open Pit, Tharsis Mines, Tharsis, Alosno, Huelva, Andalusia, Spain
Ex. Jack Halpern
8.2 x 5.6 x 3.3 cm
Current Bid:
$98
Time Left:
Close Time:
01/18/2025 6:30:00 pm (CST)
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