This unique item is perfect for collectors of all kinds. Dendrite (sometimes called picture stone or painted stone) is an amazingly original work of art by Mother Nature. The patterns occur naturally due to the presence of iron and manganese oxide Dendrites. Dendrites are the branch-like formations of manganese oxide crystallizing within the limestone. A dendrite is a superficial deposit of manganese oxide that has crystallized in a multi-branching tree-like pattern. This pattern is what fools us into thinking they are plant fossils. Dendrites form as water rich in manganese and iron flows along tiny cracks between layers of limestone and other rock types that is sure to make a great display piece. The intricate details and natural beauty of this piece are truly remarkable. Whether you are a fan of plants, vegetation, fossils, or rocks, this item is a must-have for your collection. It would also make a great gift for a fellow collector or someone who appreciates natural beauty. Don't miss out on the opportunity to add this stunning piece to your collection. Measures 5 1/2" x 6".