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Calcite
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10.2" Green, Fluorescent, Cubic Fluorite Crystals - Madagascar
$375
10.2" Fossil Ammonite, Belemnite & Gastropod Cluster - Fresney, France
$595
10.2" Green, Bladed Prehnite Crystals with Quartz - Morocco
$135
10.2" Polished, Petrified Wood (Metasequoia) Stand Up - Oregon
$245
10.2" Unique, Sparkly Quartz Stalactite Formation With Metal Stand
$395
10.2" Sparkling Druzy Quartz Formation With Metal Stand
$395
10.2" Polished "Packsaddle" Tiger Eye Slab - Western Australia
$449
1.9" Gemmy Adamite Crystals on Matrix - Ojuela Mine, Mexico
$25
1.1" Cuprian Adamite Crystals on Matrix - Ojuela Mine, Mexico
$29
1.3" Cuprian Adamite Crystals on Matrix - Ojuela Mine, Mexico
$45
.7" Gemmy Adamite Crystals on Matrix - Ojuela Mine, Mexico
$7
1" Gemmy Adamite Crystals on Matrix - Ojuela Mine, Mexico
$9
7.6" Fluorescent, Bubbly Adamite on Limonite - Ojuela Mine, Mexico
$695
7.1" Fluorescent Hexagonal Calcite Crystals - China
$295
10.2" Petrified Wood (Woodworthia) Round - Arizona
$245
1" Scorodite Crystals on Matrix - Ojuela Mine, Mexico
$25
10.2" Plate with Four Fossil Leaves (Three Species) - Montana
$345
2.9" Botryoidal Austinite on Limonite - Ojuela Mine, Mexico
$35
1.3" Limonite Pseudomorphs after Köttigite - Ojuela Mine, Mexico
$19
2.7" Malachite and Aurichalcite Crystals with Calcite - Mexico
$25
10.2" Polished "Packsaddle" Tiger Eye Slab - Western Australia
$265
10.2" Polished Hematoid Quartz Flame
$595
3.6" Polished, Free-Standing Green Pistachio Opal - Madagascar
$25
3.9" Polished, Free-Standing Green Pistachio Opal - Madagascar
$35
4.5" Polished, Free-Standing Green Pistachio Opal - Madagascar
$39
2.2" Polished Purple Passion Agate Slice - Chihuahua, Mexico
$39
6.5" Multi-Colored, Stepped Fluorite on Milky Quartz - Inner Mongolia
$445
5.7" Multi-Colored, Stepped Fluorite on Milky Quartz - Inner Mongolia
$345
4.5" Free-Standing, Polished Purple & Green Fluorite - Madagascar
$59
5.1" Fibrous Aurichalcite, Hemimorphite, & Calcite Association -Mexico
$19
3.8" Free-Standing, Polished Garnetite (Garnet) - Madagascar
$35
3.6" Free-Standing, Polished Garnetite (Garnet) - Madagascar
$29
3.3" Free-Standing, Polished Garnetite (Garnet) - Madagascar
$25
4.2" Free-Standing, Polished Garnetite (Garnet) - Madagascar
$32
4.1" Glass-Clear, Green Cubic Fluorite Crystals on Quartz - China
$99
2.7" Free-Standing, Polished Bumblebee Jasper - Indonesia
$25
6.3" Highly Fluorescent Calcite Crystal Cluster - Wenshan Mine, China
$495
3.6" Limonite Cast Pseudomorph - Ojuela Mine, Mexico
$19
10.2" Polished Petrified Palmwood (Palmoxylon) Slab - Texas
$125
10.2" Petrified Wood (Hickory) Slab - Deschutes River, Oregon
$99
5.15" Polished Banded Black River Agate - Argentina
$125
4.7" Polished Colorful Plume Agate Slab - Java, Indonesia
$19
2.4" Quartz Crystal Cluster with Epidote Inclusions - China
$45
5.5" Colorful, Polished Patagonia Agate - Highly Fluorescent!
$295
3.65" Oceanic Chrysocolla and Shattuckite Slab - Mexico
$95
3.4" Unusual Calcite Crystal Formation - Telemark, Norway
$135
$85
6.3" Free-Standing, Polished Honeycomb Calcite - Utah
$75
6.1" Free-Standing, Polished Honeycomb Calcite - Utah
$75
2.8" Fibrous Aurichalcite Aggregations with Bladed Calcite - Mexico
$19
3" Fluorescent Calcite Crystal (New Find!) - Potosi Mine
$29
3.5" Fluorescent Calcite Crystal Cluster (New Find!) - Potosi Mine
$45
3.3" Multi-Generation Calcite Cluster with Hematite Inclusions - China
$75
3.7" Unique, Fluorescent Cave Calcite Formation - Wenshan Mine
$99
5.3" Colorful, Polished Patagonia Agate - Argentina
$295
4.5" Colorful, Polished Patagonia Agate - Argentina
$165
4.7" Free-Standing, Polished Fuchsite - Madagascar
$29
4.8" Free-Standing, Polished Fuchsite - Madagascar
$29
5.5" Free-Standing, Polished Fuchsite - Madagascar
$35
4.8" Free-Standing, Polished Fuchsite - Madagascar
$29
3.9" Free-Standing, Polished Brown Calcite
$12