Lime Green Calcite #1
Millard H. Sharp
Agate From Brazil, Lm #14
Bernardo Cesare
Agate From Brazil, Lm #16
Bernardo Cesare
Quartz Crystals #10
Millard H. Sharp
Wulfenite #5
Millard H. Sharp
Yellow Mica
Millard H. Sharp
Agate From Brazil, Lm #9
Bernardo Cesare
Agate From Malawi, Lm
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #8
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #19
Bernardo Cesare
Agate From Malawi, Lm #6
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #23
Bernardo Cesare
Azurite #1
Millard H. Sharp
Celestite #1
Millard H. Sharp
Gypsum Crystals
Millard H. Sharp
Barite With Pyrite
Millard H. Sharp
Sulfur #1
Millard H. Sharp
Amazonite #1
Millard H. Sharp
Barite Crystals #1
Millard H. Sharp
Selenite #1
Millard H. Sharp
Chalcedony
Millard H. Sharp
Lime Green Calcite
Millard H. Sharp
Fluorescent Aragonite
Millard H. Sharp
Azurite #7
Millard H. Sharp
Native Copper #4
Millard H. Sharp
Quartz Crystals #17
Millard H. Sharp
Malachite #9
Millard H. Sharp
Celestite #4
Millard H. Sharp
Calcite On Amethyst Crystals
Millard H Sharp
Amethyst Geode #9
Millard H Sharp
Vanadinite #3
Millard H. Sharp
Petrified Wood Treetrunk
Millard H. Sharp
Azurite #8
Millard H. Sharp
Barite With Galena
Millard H. Sharp
Chalcanthite #1
Millard H. Sharp
Stilbite #2
Millard H Sharp
Creedite #2
Millard H. Sharp
Ocean Jasper From Madagascar, Lm #1
Bernardo Cesare
Agate From Brazil, Lm #5
Bernardo Cesare
Agate From Brazil, Lm #6
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #6
Bernardo Cesare
Agate From Brazil, Lm #24
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #21
Bernardo Cesare
Ocean Jasper From Madagascar, Lm #25
Bernardo Cesare
Agate From Argentina, Lm #2
Bernardo Cesare
Agate From Malawi, Lm #8
Bernardo Cesare
Agate From Brazil, Light Micrograph
Bernardo Cesare
Agate From Brazil, Lm #32
Bernardo Cesare
Agate From Brazil, Lm #33
Bernardo Cesare
Agate From Brazil, Lm #41
Bernardo Cesare
Sulphur, Baja Mexico
Millard H. Sharp
Gold On Quartzite
Millard H. Sharp
Geode Unopened #2
Millard H. Sharp
Aragonite Crystals #1
Millard H. Sharp
Mimetite
Millard H. Sharp
Pyromorphite #1
Millard H. Sharp
Azurite #2
Millard H. Sharp
Vanadinite #1
Millard H. Sharp
Malachite And Chrysosolla
Millard H. Sharp
Realgar Crystals
Millard H. Sharp
Blue Ice Agate
Millard H. Sharp
Pyrite Crystals
Millard H. Sharp
Cavansite
Millard H. Sharp
Citrine Crystals #1
Millard H. Sharp
Rhodochrosite With Barite On Quartz
Millard H. Sharp
Cavansite #1
Millard H. Sharp
Pyrite Crystals #1
Millard H. Sharp