Beautiful Blue Calcite pebbles. Each on of these are individually hand polished in Madagascar (as opposed to tumblestones which are produced in a large tumbling machine). The Pebbles are much larger than tumblestones and are a good size to hold in the hand. Each piece will vary slightly due to the nature of calcite. Calcite is a relatively soft mineral only 3 on the MOHS hardness scale, so it can scratch easily, but on a metaphysical level, this softness you could say is part of its attributes.