Orange calcite tumblestones exhibiting a rich orange colour, fairly unusual for this mineral. Calcite its self is a naturally occurring common mineral and has a variety of uses in modern industry. These particular gemstones are of the orange variety, while not as common as the white or brown it is still very popular with many. Other colours include blue and green. These minerals have been tumbled and polished making them smooth to touch and enhances their vibrant colour, they roughly measures 2 cm in size.