Septarian Skull pyrite cluster This process is where quartz

This process is where quartz replaces crocidolite fibers (blue asbestos)

5 L inches

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

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

This stone was discovered in 2006 in Madagascar

Septarian Skull pyrite cluster This process is where quartzSeptarian 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