Sunstone, a feldspar mineral prized for its warm, shimmering iridescence known as aventurescence, evokes the brilliance and joyful energy of the sun, its captivating sparkle, often displaying hues of orange, red, yellow, and sometimes green or blue, making it a sought-after gemstone for jewelry and ornamental purposes, cherished for its unique optical effect and uplifting aura. This characteristic aventurescence is caused by tiny, plate-like inclusions of copper, goethite, or hematite within the feldspar structure, typically oligoclase or orthoclase, which reflect and scatter light, creating a glittering, spangled effect seemingly emanating from within, with the intensity and colour depending on the size, density, and orientation of these inclusions; while found in various locations globally, the most highly regarded material, often with a strong and vibrant schiller, comes from Oregon, its official state gemstone. With a hardness of 6 to 6.5 on the Mohs scale and a typically vitreous lustre, ranging from transparent to translucent, sunstone is reasonably durable for jewellery but should be handled with care to avoid scratches, and beyond its captivating appearance, it is often associated with warmth, positivity, and vitality, believed to inspire joy, optimism, and enthusiasm, dispel negativity, and encourage independence and originality, sometimes also linked to attracting abundance and good fortune, and in crystal healing practices, used to boost physical energy, enhance metabolism, and promote self-healing, its vibrant colours connecting it to the solar plexus chakra.