You are purchasing the Agate crystal bookends, pictured. This Agate crystal has been dyed to enhance the banding.
About Agate Crystal Bookends
Agate is a banded Chalcedony, which is a member of the Quartz crystal family.
Agate is a crystal that grounds and balances on an emotional, physical and intellectual level. This crystal is soothing, calming, slow and steady however has much strength.
Agate crystals will help you overcome anger and encourage love to grow in its place. If you have suffered any emotional trauma Agate crystals will help you feel safe and secure.