Longer Diameter: 3.5+ Inches. Thickness: 0.6 to 0.7 inches. Weight: 3.0..0 Oz Origin: Madagascar The shape, size, coloration, natural design, ring patterns, thickness etc., are unique to the item sold. You will receive the same item as shown in the pictures. These fossilized specimens are nature's true miracle with structural details meticulously preserved after millions of years. These sections are professionally polished on both sides to expose wood venation, ring pattern, and other internal morphological features. The shape, size, coloration, ring patterns, etc., features are are natural and unique to this piece. Enhance the beauty of your living rooms, entryways, offices. Available as free delivery by USPS ground or with additional charge for preferred carriers . Petrifaction fact: Petrifaction is the result of ancient trees been replaced by minerals over millions of years.