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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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WEEKLY MINERAL & GEM AUCTIONS!
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Auction
Specimens from the Collection of Dr. Bob Lauf
Mineral / 28 Items
Ends April 20th 6:30 pm
Mixed Mineral Auction!
Mineral / 60 Items
Ends April 25th 6:45 pm
Category
Minerals
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Current Bid: Low to High
Current Bid: High to Low
Staurolite with Almandine Garnet (excellent specimen)
Keivy Mountains, Lovozersky District, Murmansk Oblast, Russia
Ex. Dr. Bob Lauf
18.3 x 12.2 x 2.3 cm
Current Bid:
$692
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Chabazite (classic material - 1800s)
Nidda, Wetteraukreis, Darmstadt, Hesse, Germany
Ex. Dr. Bob Lauf; August Krantz; Michigan Tech.
5.7 x 3.6 x 2.6 cm
Current Bid:
$30
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Quartz (bipyramidal crystals) included with Hedenbergite
2nd Sovetskii Mine, Partizanskoe Pb-Zn deposit, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia
Ex. Dr. Bob Lauf
12.3 x 10.1 x 9.3 cm
Current Bid:
$406
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Stilbite-Ca (''bow tie''-shaped group) (Collected: 1940s)
Upper New Street Quarry, Paterson, Passaic Co., New Jersey, USA
Ex. Dr. Bob Lauf; Walter Kuenstler
4.6 x 3.9 x 1.7 cm
Current Bid:
$157
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Torbernite (old classic) (Mined: 1800s)
Old Gunnislake Mine, Clitters United Mines, Gunnislake, Calstock, Cornwall, England, UK
Ex. Dr. Bob Lauf; Archduke Stefan
5.0 x 3.7 x 2.7 cm
Current Bid:
$232
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Sillimanite var: Fibrolite (pre-1900)
Bodenmais, Regen District, Lower Bavaria, Bavaria, Germany
Ex. Dr. Bob Lauf; August Krantz; Michigan Tech.
5.6 x 2.7 x 2.3 cm
Current Bid:
$42
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Stilbite Subgroup
near Manjuri, Chuta Magpur, Bengal, India
Ex. Dr. Bob Lauf; Geological Museum of Calcutta, Michigan Tech.
10.6 x 7.2 x 6.3 cm
Current Bid:
$32
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Heulandite Subgroup (classic locality)
Bulandsdalur, Berufjörður, Djúpavogshreppur, Múlaþing, Eastern Region, Iceland
Ex. Dr. Bob Lauf; John Albanese; A. J. Beres
6.3 x 5.4 x 4.7 cm
Current Bid:
$97
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Datolite included with Hedenbergite with Ilvaite
1st Sovetskii Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia
Ex. Dr. Bob Lauf
7.8 x 5.0 x 3.2 cm
Current Bid:
$638
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Graphite (3 specimens)
Lead Hill Mines, Ticonderoga, Ticonderoga Township, Essex Co., New York, USA
Ex. Dr. Bob Lauf
6.5 x 4.5 x 2.7 cm; 6.2 x 4.7 x 3.3 cm; 5.2 x 3.4 x 2.3 cm
Current Bid:
$30
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Smithsonite (classic locality) (circa 1890)
Lavrion Mining District, Lavreotiki, East Attica, Attica, Greece
Ex. Dr. Bob Lauf; John Legro
7.3 x 7.1 x 3.7 cm
Current Bid:
$30
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Manganite with Quartz and Baryte (classic material) (late 1800s)
Manganese Deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany (Type Locality)
Ex. Dr. Bob Lauf
10.1 x 6.3 x 4.3 cm
Current Bid:
$130
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Pyromorphite (classic material)
Wheatley Mines, Schuylkill Township, Chester Co., Pennsylvania, USA
Ex. Dr. Bob Lauf
8.1 x 6.2 x 3.7 cm
Current Bid:
$805
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Vesuvianite (''Egeran'') (rare old locality specimen)
Hazlov, Cheb District, Karlovy Vary Region, Czech Republic
Ex. Dr. Bob Lauf
7.1 x 3.9 x 3.7 cm
Current Bid:
$57
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Phosgenite (fine classic material)
Monteponi Mine, Iglesias, Carbonia-Iglesias Prov., Sardinia, Italy
Ex. Dr. Bob Lauf; Carl Bosch; Smithsonian Institution
4.6 x 3.7 x 2.8 cm
Current Bid:
$216
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Calcite (Manganese-bearing) with orange Baryte
Montreal Mine, Montreal, Gogebic Range, Iron Co., Wisconsin, USA
Ex. Dr. Bob Lauf
5.3 x 5.2 x 4.6 cm
Current Bid:
$131
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Titanite (''V''-twin) on a Smoky Quartz Gwindel
Dodo Mine, Saranpaul, Berezovo District, Khanty-Mansi Autonomous Okrug, Russia
Ex. Dr. Bob Lauf
5.6 x 4.3 x 2.7 cm
Current Bid:
$143
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Aragonite (superb rare locality specimen)
Morro Bay, San Luis Obispo Co., California, USA
Ex. Dr. Bob Lauf; Ed Allabough
13.2 x 10.7 x 5.2 cm
Current Bid:
$166
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Azurite with Smithsonite (classic material)
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Dr. Bob Lauf
10.7 x 5.8 x 5.1 cm
Current Bid:
$444
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Vesuvianite (old classic) (Mined: 1837)
Zermatt - Saas Fee area, Valais, Switzerland
Ex. Dr. Bob Lauf
3.2 x 2.6 x 1.2 cm
Current Bid:
$165
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Vesuvianite var: Cerian Vesuvianite with Perovskite and Andradite var: Melanite
Perovskite Peak, San Benito Peak, San Benito Co., California, USA
Ex. Dr. Bob Lauf
9.3 x 6.3 x 4.1 cm
Current Bid:
$40
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Tyrolite (rare) (Mined: circa 1890)
Tintic Mining District, Juab Co., Utah, USA
Ex. Dr. Bob Lauf; John Legro
9.0 x 6.3 x 4.5 cm
Current Bid:
$130
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Hausmannite (rare historic specimen)
Oehrenstock, Langewiesen, Ilmenau, Ilm District, Thuringia, Germany (Type Locality)
Ex. Dr. Bob Lauf; Dr. Friedrich Krantz; John Parnau
5.6 x 4.6 x 4.4 cm
Current Bid:
$212
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Vesuvianite (fine locality specimen)
Sanford, York Co., Maine, USA
Ex. Dr. Bob Lauf; Ernie Schlichter
8.3 x 6.7 x 4.7 cm
Current Bid:
$65
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Smithsonite on reticulated Cerussite
Tsumeb Mine, Oshikoto Region, Namibia
Ex. Dr. Bob Lauf; Don Belsher
8.1 x 7.7 x 5.7 cm
Current Bid:
$115
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Gismondine Subgroup (rare historic specimen) (Mined: 1878)
Břidličný vrch, Dolni Zálezly, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
Ex. Dr. Bob Lauf; Lazard Cahn
8.6 x 4.7 x 1.6 cm
Current Bid:
$65
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Kyanite (rare locality)
Thomas Mine (Balsam Gap Kyanite Location), Buncombe Co., North Carolina, USA
Ex. Dr. Bob Lauf
5.2 x 3.7 x 3.3 cm
Current Bid:
$80
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Heulandite-Ca with rare FLUORITE association
Gibelbach, Fiesch, Goms, Valais, Switzerland
Ex. Dr. Bob Lauf
15.2 x 7.3 x 3.2 cm
Current Bid:
$74
Time Left:
Close Time:
04/20/2024 6:30:00 pm (CDT)
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Chrysocolla pseudomorph after Malachite replacing Azurite
Luputo, Kakumba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo
3.6 x 2.3 x 1.3 cm
Starting Bid:
$10
Time Left:
Close Time:
04/25/2024 6:45:00 pm (CDT)
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Quartz var: Agate with moving water bubble inclusion (NEW FIND!)
Java, Indonesia
3.1 x 1.7 x 0.8 cm, 14.39 grams
Current Bid:
$10
Time Left:
Close Time:
04/25/2024 6:45:00 pm (CDT)
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