It is related to beryl and other beryllium minerals. It is a product of the decomposition of beryl in pegmatites. Euclase crystals are noted for their blue color, ranging from very pale to dark blue. The mineral may also be colorless, white, or light green.
Metaphysically, Sunstone is known for its powerful connection to the light and power of the sun. Sunstone brings light to all situations, and carrying a piece around with you can help your personal power to “shine”. Once known as a stone of good luck, Sunstone has a bright, joyful energy that increases vitality and lightens dark moods