2.9 Inch Septarian Turtle Back Ruby is a variety of

Ruby is a variety of corundum (aluminum oxide) and fuchsite is a variety of chromium-rich muscovite mica

and teaching

This tooth shows natural cracks located in the tooth enamel

the latest research suggests otherwise

This necklace was handmade right here in one of our galleries

2.9 Inch Septarian Turtle Back Ruby is a variety ofSize: 2. 9 x 1. 0 in. Weight: 5. 1 oz This small septarian nodule is perfect for any collection or desktop display! Septarian forms in "nodules." These concretions are essentially fossilized mud bubbles that began forming during the Cretaceous Period between 50 to 70 million years ago. Its name is derived from the word "septum" meaning partition. As you can see in the photos, these specimens are composed of 3 different minerals, calcite (yellow),