Blue moonstone (orthoclase) is from the feldspar family of minerals. It is white or clear and at times has a pearl-like colour. Sparkling glimpses of blue can be seen, hence the name "blue moonstone." Tiny albite crystals within the stone provide a shimmering glow known as adularescence. Moonstone was very popular early in the 20th century and was extensively used in Art Nouveau jewellery.
As a healing stone, it enhances intuitive sensitivity, relieves anxiety and stress and reduces the tendency to over-react emotionally.