Septarian Skull pyrite cluster This piece is "day fluorescent"

This piece is "day fluorescent" - green inside and develops into a dark blue when in the sunlight

Dimensions: 6

Dimension: 4

The iron oxidizes into reddish bands while the reduced iron creates green or whitish banding

Septarian Skull pyrite cluster This piece is "day fluorescent"Septarian nodules that have been carved and polished into a skull shape. The natural cracked pattern gives a unique dragon skin look. These nodules start out as a ball of mud, when the mud dries out and cracks, minerals (primarily calcite and aragonite) fill in the cracks. You will receive one piece selected from our current stock. All pieces are of similar size and quality. Average Dimensions: 2. 0 L x 1. 25 W x 1. 5 H inches. Average Weight: 4. 28