Some agate geodes have closed in on them self giving them a spherical shape. When cracked open with a small hammer their interior reveals their never before seen crystalline structure.
Small
Dimensions: Approximately 1.5" D
Weight: Approximately 0.07-0.12 pounds
Medium
Dimensions: Approximately 2" D
Weight: Approximately 0.3-0.5 pounds
Large
Dimensions: Approximately 2.5"D
Weight: Approximately 0.6-1 pounds