$22.00Approximately 25 pieces of gorgeous blue calcite. One full pound. Great for classroom mineral kits, simulated panning or dig activities for kids and students. Ask about volume discounts.
$19.99Natural rough Turquoise - 1/4 lb - 15+ pieces. Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl₆(PO₄)₄(OH)₈·4H₂O. It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of years owing to its unique hue.
$19.99Gorgeous green calcite - perfect for classroom or party dig or panning activity - great for classroom mineral collections. Often used as a healing crystal. Calcite is a rock-forming mineral with a chemical formula of CaCO3. It is extremely common and found throughout the world in sedimentary, metamorphic, and igneous rocks. Some geologists consider it to be a "ubiquitous mineral" - one that is found everywhere. Calcite is the principal constituent of limestone and marble. 1 lb - 25+ pieces