Agate Rhyton by Harold Van Pelt: carved agate drinking vessel with gold capped nose with a hole to restrict the flow of liquid. (Photo courtesy Bowers Museum)

Quartz Twin Vases by Harold Van Pelt: Rock crystal vases measuring 10 ½ in high × 3 in. in diameter at the top and 3 ½ in. at the base. Each vase has 96 facets. The tops of the covers are made of green and pink tourmalines. (Photo courtesy Bowers Museum)

Balancing Act' by Harold Van Pelt. An acorn-shaped Quartz container suspended from a base of Rutilated Quartz

Harold Van Pelt. Hummingbird, 8" high. (Photos: Harold and Erica Van Pelt)

Harold Van Pelt. Hummingbird, detail of “hummingbird” inclusion. (Photos: Harold and Erica Van Pelt)

Harold Van Pelt. Quartz crystal skull. The crystal, originally weighing 250+ lbs., contains rare izoklakeite inclusions.