This piece is giving all the Fall vibes! 🍂 
Calling this material Zebra Hematoid. This piece is from Brazil and when snagging from my supplier the exact mineral makeup was a mystery. It appears to be a mix of smoky quartz with golden healer and another mystery component. The shimmer may be due to some mica in the specimen. 
This is a statement piece measuring about 9 inches tall and the weight of the crystal is .488 kg.