Petrified Wood Slab, a Polished Fossil Stone Tree Specimen Slice from Madagascar, Each Piece Different for a Unique Gift, Medium 2 1/2"-4" Size These slices were once PART OF A LIVING TREE FROM MADAGASCAR, alive during the Early Triassic period. As the years passed, the once living material was covered by sediment and yet protected from decay. The tree structure was replaced with various minerals as water flowed through the sediment, and eventually, the tree petrified (which means "turned to stone"). Different minerals produce the variety of colors that you see in the different pieces we offer. YOU WILL ONE OF SIMILAR QUALITY TO THOSE PICTURED, and while it is possible to receive one of those shown, it is not likely. These pieces are medium size, between 2 1/2" to 4" the longest way. No two pieces are exactly alike; each one is unique. DESPITE IMPERFECTIONS acquired through the ravages of time and force, each one is a nearly complete slice. The wood grain details are visible on the face as well as on the sides EACH OF THESE PIECES WE OFFER IS UNIQUE, no two pieces are exactly alike, though it is possible for some to come from the same or similar tree. These fossil pieces of Nature are not only prized by rock and mineral collectors, but also those who simply love agates and natural materials. Petrified tree slices and branches make unusual display items and are great conversational pieces in the home or office as well. EAGems is committed to your satisfaction, now and in the future.