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Calcite
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2.5" Gleaming Striated Pyrite Crystals with Quartz - Peru
$25
2.5" Iridescent Rainbow Pyrite In Septarian Nodule - Russia
$19
2.5" Iridescent Rainbow Pyrite In Septarian Nodule - Russia
$15
2.5" Colorful Elbaite and Schorl in Quartz - Leduc Mine, Quebec
$59
2.5" Lustrous Smoky Quartz Crystal - Brazil
$19
2.5" Botryoidal Hyalite Opal with Chalcedony - Mexico
$25
2.5" Sparkly Druzy Quartz Cabochon - Artigas, Uruguay
$15
2.5" Sparkly Druzy Quartz Cabochon - Artigas, Uruguay
$15
2.5" Purple, Stepped-Octahedral Fluorite on Quartz - Lupita Mine
$49
5.6" Natural, Red Quartz Crystal Cluster - Morocco
$99
3.7" Natural, Red Quartz Crystal Cluster - Morocco
$59
2.5" Light Yellow Calcite Crystals on Dolomite - Missouri
$25
2.5" Sparkly Druzy Amethyst Cabochon - Artigas, Uruguay
$12
2.5" Cambrian Trilobite (Hamatolenus) - Tinjdad, Morocco
$175
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
7.6" Sparkly Red Quartz Crystal Cluster - Morocco
$335
2.5" Tangerine Quartz Crystal Cluster - Brazil
$15
2.5" Tangerine Quartz Crystal Cluster - Brazil
$15
1.9" Amethyst and Chabazite Crystals on Sparkling Chalcedony - India
$19
2.5" Normandite & Aegirine On Feldspar - Russia
$55
21" Amethyst Geode Section with Calcite on Metal Stand - Uruguay
$2,450
2.5" Yellow, Cubic Fluorite Cluster - Moscona Mine, Spain
$19
2.5" Sparkling Dioptase Crystals with Mimetite - N'tola Mine, Congo
$185
1.95" Sparkling Druzy Quartz and Calcite on Basalt - India
$22
2.9" Purple & Green Cubic Fluorite with Quartz - China
$99
10.8" Milky, Candle Quartz Crystal - Inner Mongolia
$245
9.8" Milky, Candle Quartz Crystal - Inner Mongolia
$245
5.6" Mango Quartz Crystal Cluster - Cabiche, Colombia
$795
4" Hematite Quartz, Chalcopyrite and Pyrite Association - China
$49
4.6" Hematite Quartz, Chalcopyrite and Pyrite Association - China
$135
2.7" Quartz and Pyrite on Dolomite - Peru
$19
2.6" Quartz Crystals and Pyrite on Sphalerite - Peru
$25
3.7" Golden-Yellow Calcite Crystal - Morocco
$12
3" Golden Calcite Crystals - Morocco
$15
2.5" Highly Fluorescent Skeletal Calcite Crystal Cluster - Wenshan Mine
$85
4.35" Quartz and Pyrite Crystal Cluster - Crystals on Crystals!
$39
2.5" Sparkling Dioptase and Mimetite on Dolomite - N'tola Mine, Congo
$149
2.5" Glassy Yellow Anglesite Crystals on Galena - Morocco
$795
3.3" Natural, Red Quartz Crystal Cluster - Morocco
$55
5.4" Natural, Red Quartz Crystal Cluster - Morocco
$125
2.5" Calcite Crystal Cluster - Spain
$19
3.7" Golden-Yellow Calcite Crystal - Morocco
$12
3.4" Golden-Yellow Calcite Crystal - Morocco
$12
12.7" Blue Bladed Barite Crystal Clusters on Calcite - Morocco
$245
5.6" Quartz Crystals with Pyrite Crystal Inclusions - Peru
$39
2.5" Glittering, Ruby Red Vanadinite Crystals on Barite - Morocco
$25
2.5" Cactus Quartz (Amethyst) Crystal Cluster - South Africa
$19
2.5" Amethyst Crystal Cluster - South Africa
$19
2.5" Colorful Crotalocephalina Trilobite - Atchana, Morocco
$145
2.5" Colorful Sinbad Agate Nodule Half - Utah
$25
2.5" Tabular Red-Brown Barite Crystal - Morocco
$7
10.3" Striated Colombian Quartz Crystal Cluster - Peña Blanca Mine
$995
4.5" Striated Colombian Quartz Crystal Cluster - Peña Blanca Mine
$99
3.15" Quartz Needles with Pyrite on Sphalerite - Peru
$25
2.5" Polished Candy Agate Nodule - Malawi
$99