Moonstone beads are gemstones carved from moonstone, an ancient semi-precious stone. Different varieties of the mineral are mined all over the world, but they are most often found in India, where they have been mined for thousands of years for their metaphysical properties. The name “moonstone” comes from its resemblance to a full moon shining on water. The name “moonstone” comes from its resemblance to a full moon shining on water. Moonstone gemstones are formed when the mineral mica (which is transparent and soft) becomes solidified. This can take hundreds or thousands of years, so it is extremely rare to find a naturally formed moonstone in large quantities.