Microscopic view of fossil coral jasper

Formed over 500 million years ago, these colorful creatures are a visual treat beyond comparison and a symbol of endurance, resilience and longevity. The cross-sectional view of single polyp tube of fossil coral jasper reveals circular structure with hollow interior divided into compartments. White bulbous knob like structures are perhaps acrospheres, the terminal part of tentacles that contain stinging cells or cnidocytes. The calcium carbonate skeleton is now transformed into a beautiful jasper stone with cryptocrystalline silica and other minerals. Due to its hardness and durability, it is used for making jewelry and decorative items.