Spherical Bull:
Rhodochrosite on tetrahedrite
Spherical Bull:
xiphactinus (bottom)
Spherical Bull:
Xiphactinus Audax Skeleton Reconstruction
Spherical Bull:
Wulfenite on mimetite, AZ
Spherical Bull:
Wulfenite
Spherical Bull:
Topaz, Elbaite, Quartz, and Albaite
Spherical Bull:
Topaz and Smoky Quartz.
Spherical Bull:
Two T Rexes Squaring Off
Spherical Bull:
Rosasite from Arizona
Spherical Bull:
Pyrite Crystals
Spherical Bull:
Protostegas gigas
Spherical Bull:
Pachyrhizodus caninus Skeleton Reconstruction
Spherical Bull:
Mesolite from India
Spherical Bull:
Malachite from Arizona
Spherical Bull:
Fluorite from China
Spherical Bull:
Fluorite and Sphalerite from Illinois
Spherical Bull:
Fluorapophyllite and Stilbite from India
Spherical Bull:
Elbaite from Brazil
Spherical Bull:
Clinochlore
Spherical Bull:
Calcite and Sphalerite from Tennessee
Spherical Bull:
Azurite
Spherical Bull:
Azurite and Malachite from Chile
Spherical Bull:
Apatosaurus Skeleton
Spherical Bull:
Azurite and Malachite
Spherical Bull:
Amethyst
Spherical Bull:
Tourmaline on Albite
Spherical Bull:
Calcite
Spherical Bull:
Siderite and Galena on Quartz
Spherical Bull:
Fluorapophyllite and Stilbite
Spherical Bull:
Scolecite
