1.9" Natural Polished Red Silk Banded Agate Chalcedony Mineral Specimen Eurypterids Crocodiles that lived 230 million

Crocodiles that lived 230 million years ago were up to 40 feet long

These passages are formed from a precise arrangement of tetrahedral and octahedral units

These chambers helped regulate buoyancy

Hadrosaurus bore a resemblance to Kritosaurus

Size: 18 meters in length

1.9" Natural Polished Red Silk Banded Agate Chalcedony Mineral Specimen Eurypterids Crocodiles that lived 230 millionLocation: Madagascar Weight: 2. 3 Ounces Dimensions: 1. 9 Inches Long, 1. 7 Inches Wide, 0. 9 Inches Thick The item pictured is the one you will receive. Agate, a captivating variety of banded Chalcedony from the Quartz family, owes its name to the Achates River in Sicily, its source. With striking layers and stripes, this mineral can showcase unique "eye" patterns, colorful specks, fossilized inclusions, or even solid hues. Often called the Earths