Spessartine crystal (modified dodecahedron), 1.5 cm across on smoky quartz, Ramona, California 

Pink elbaites: crystal 10 cm long and 419.5 carat cut stone, Pala, California 

4.03 carat cut spinel and an octahedral crystal, 1 cm across in marble 

Rhodolite garnet, 24.5 carats, Tanzania 

Round brilliant-cut zircon, 208.65 carats,Thailand, largest known blue zircon on public display 

The rock crystal statue of Atlas holding up the world is 12 cm in height. It was carved during the nineteenth century in Russia from a quartz crystal found in the Ural Mountains. 

Left: imperial topaz crystal, 5.5 cm (length), Ouro Preto, Minas Gerais, Brazil; Right: 16.95 carat cut stone, Sri Lanka 

Heliodor crystal and cut stone 

A chrysoberyl trilling, consisting of three twinned crystals, from Espirito Santo, Brazil; it measures 8 cm. Double exposure: Front and side view. 

Quartz varieties including rock crystal, smoky quartz, citrine, amethyst, rose quartz, and green quartz, weights range from 13.16 to 489.85 carats; cut gems, oval, pear-shaped, and star-shaped, from v 

Group of three intergrown rutilated quartz crystals measuring 6.7 cm (height), Itabira, Minas Gerais, Brazil 

Peridot crystal 4.1 cm long and a 10.92 carat cut stone, Zabargad Island, Egypt 

Engraved almandine garnet bowl 

Diamond crystals, single and twinned, maximum dimension 1 cm 

An 85 carat cat's eye, Chrysoberyl 

Tanzanite crystal 

Platinum pendant set with diamonds and emerald crystal, 1.6 cm long 

Emerald crystal 

Square-cut 278.25-ct. morganite, Minas Gerais in Brazil; matrix specimen consisting of a perfect morganite crystal (6.5 cm across) with a gem-quality bicolor elbaite, San Diego County, California 

Kunzite crystal and cut stones, Hall of Gems and Minerals, American Museum of Natural History, 1990