A slice across a green agate stalactite or stalagmite. The specimen is glued to a gold coloured metal stand. Do you know how to tell a stalactite from a stalagmite in situ? A stalactite has to hold on tight, a stalagmite might reach the roof.
1 inch (2.5 cm) wide, 9/16 inch (1.4 cm) deep and 7/8 inch (2.2 cm) tall.