Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement volatiles in the molten mass which were then filled, wholly or partially, by siliceous matter deposited in regular layers upon the walls. Such agates, when cut transversely, exhibit a succession of parallel lines, often of extreme tenuity, giving a banded appearance to the section. Such stones are known as banded agate, riband agate and striped agate. Agate with a cavity is called a geode.
These are beautiful handmade agate bookends! Each bookend is cut, and polished by hand in Brazil from rough agate geodes. Geodes are ancient rocks formed from gas bubbles on past volcanic eruptions or by the dissolution of sedimentary concretions like quicksand over million of years and are known to carry great power within them.
Each agate geode is hand selected for it's natural beauty from rough material, hand cut in halves, polished and dyed. A lot of work goes into making these handmade bookends. They look amazing as natural home decoration and keep books align and straight on shelves bringing harmony to the room.