Calymene Trilobite in Matrix Nodule - Fossil bubbly Coprolites are quite rare because

Coprolites are quite rare because they tend to decay rapidly

Description: Riebeckite also know as Blue Quartz is a magnesium-dominated end member which has magnesium that replaces part of the iron in its structure

Shungite reduces stress and alleviates anxiety

which can range from pale to vibrant hues depending on the concentration of cobalt

Shaft Diameter: 1/8" (3mm) shank

Calymene Trilobite in Matrix Nodule - Fossil bubbly Coprolites are quite rare becauseMined from: Anti Atlas Region, Morocco Description: Calymene Species from the Ktaoua Group formation. Era: Upper Ordovician Geological Age: 460 443 mya Both Halves Closed Approximate Size of 1 piece: 40mm x 50mm x 50mmApproximate Weight of 1 piece: 90g Quantity: 2 pieces (top and bottom) We do our best to buy quality products although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch