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Calcite
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4.9" Golden, Calcite Crystal - Morocco
$15
4.9" Chalcedony Encrusted Barite and Quartz Crystals - India
$125
2" Quartz Crystal Cluster with Calcite & Loellingite - Mongolia
$32
4.9" Free-Standing, Polished Flower Agate - Madagascar
$35
4.9" Quartz and Pyrite Crystal Cluster - Peru
$25
4.9" Cambrian Trilobite (Acadoparadoxides) - Tinjdad, Morocco
$495
4.9" Polished Banded Agate Nodule Section - Morocco
$59
4.9" Sauropod Dinosaur (Cetiosaur) Vertebra - England
$395
13" Dark Smoky Quartz Crystal Cluster on Metal Stand - Brazil
$895
$750
4.9" Deep Purple Amethyst Geode With Wood Base - Uruguay
$89
4.9" Spiny Drotops Armatus Trilobite - Mrakib, Morocco
$1,650
4.4" Quartz Encrusted Yellow Fluorite With Galena - Morocco
$49
4.45" Quartz Encrusted Yellow Fluorite With Galena - Morocco
$35
4.9" Enchanting, Polished Black River Agate - Argentina
$89
3" Botryoidal Green Smithsonite & Calcite Association - Greece
$595
4.9" Free-Standing, Polished Blue Apatite - Madagascar
$59
4.9" Petrified "Sierra Spectrum" Wood Slab - California
$145
5.6" Natural, Red Quartz Crystal Cluster - Morocco
$99
3.7" Natural, Red Quartz Crystal Cluster - Morocco
$59
1.95" Sparkling Druzy Quartz and Calcite on Basalt - India
$22
4.8" Dark Smoky Quartz Crystal Cluster - Brazil
$35
33" Golden-Orange "Citrine" Cathedral Geode - Spectacular Display
$2,950
10" Carved Chevron Amethyst Dinosaur Crystal Skull - Ferocious!
$1,195
$950
4.7" Natural, Red Quartz Crystal Cluster - Morocco
$125
9.9" Natural, Red Quartz Crystal Cluster - Morocco
$175
5.6" Natural, Red Quartz Crystal Cluster - Morocco
$155
5.5" Natural, Red Quartz Crystal Cluster - Morocco
$125
5.7" Natural, Red Quartz Crystal Cluster - Morocco
$95
4.8" Natural, Red Quartz Crystal Cluster - Morocco
$79
8.1" Dark Smoky Quartz Crystal Cluster on Metal Stand - Brazil
$345
8" Dark Smoky Quartz Crystal Cluster on Metal Stand - Brazil
$295
4.35" Quartz and Pyrite Crystal Cluster - Crystals on Crystals!
$39
Massive, 15" Natural Smoky Quartz Crystal - Brazil
$1,195
1.9" Amethyst and Chabazite Crystals on Sparkling Chalcedony - India
$19
4.9" Polished Septarian Nodule Half - Utah
$59
4.9" Polished Sicat Plume Agate Slab - Cady Mountains, California
$225
10.8" Milky, Candle Quartz Crystal - Inner Mongolia
$245
9.8" Milky, Candle Quartz Crystal - Inner Mongolia
$245
2.35" Amethyst, Calcite and Chabazite in Basalt - India
$29
54" Wide, Massive Multi-Window Amethyst Geode - Museum Quality
$27,500
7.6" Sparkly Red Quartz Crystal Cluster - Morocco
$335
1.2" Amethyst Crystals and Chabazite in Basalt - India
$15
4.9" Deep Purple Amethyst Geode With Wood Base - Uruguay
$99
21" Amethyst Geode Section with Calcite on Metal Stand - Uruguay
$2,450
4.9" Polished Laguna Agate Nodule Half - Mexico
$325
2.4" Cubo-Octahedral Galena on Barite and Pyrite - Morocco
$45
14.5" Smoky Quartz Crystal Cluster on Metal Stand - Brazil
$950
16.3" Unique Amethyst Geode With Metal Stand - Uruguay
$1,650
2.1" Tabular Red-Brown Barite Crystal - Morocco
$7
3.5" Tabular Red-Brown Barite Crystal - Morocco
$15
3.5" Tabular Red-Brown Barite Crystal - Morocco
$19
2.5" Tabular Red-Brown Barite Crystal - Morocco
$7
2.2" Tabular, Yellow-Brown Barite Crystal Cluster - Morocco
$5
2.8" Tabular, Red-Brown Barite Crystal Cluster - Morocco
$9
3.1" Tabular Red-Brown Barite Crystal - Morocco
$9
4.9" Fossil Fish (Cockerellites) - Wyoming
$295
2.2" Hausmannite Crystal Cluster - N'Chwaning Mine, South Africa
$25
6.05" Deep Purple Amethyst Cluster - Congo
$295
5.5" Deep Purple Amethyst Cluster - Congo
$245
3.2" Tessin Habit Smoky Quartz Crystal Cluster - Nigeria
$95