Halley Cruz

Sunstone is a microcline feldspar containing red copper, hematite, and goethite. When you look at Sunstone Jewelry from certain angles, it shows a spangled appearance, and this phenomenon is known as aventurescence in gemology. This optical phenomenon in which sunstone shows a spangled appearance is caused due to inclusions of hematite, red copper, or goethite, which is present as minute scales. These minute scales are hexagonal, rhombic, or irregular in shape. If you look closely at the inclusions, you will find them similar to that of Aventurine, which is why this gemstone is also known as Aventurine-feldspar. Not all sunstones exhibit aventurescence (which is a type of Schiller Effect).