C919 19th century Exotic minerals allow the colors

Exotic minerals allow the colors to form in each specimen that has been polished by hand

creating colorful and complex varieties of banded chalcedony and crystal quartz

The Chesapecten shell cluster was found from the banks of the James River and are usually 3 to 8 million years old

5" deep x 7" high

19th century French fragment decorated with calcite crystals on sphalerite

C919 19th century Exotic minerals allow the colorsPetrified wood decorated with a chalcedonian rosette and hemimorphite on a lucite base. Chalcedony is named after the ancient seaport of Chalcedon. The crystal aggregates consist of sphericalrosettes with jutting pointed crystals. It is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite. Chalcedonian rosettes are rare, and information alone is hard to come by. Size: 11" high x 4" wide x 4" deep