Below is a summary of the available information extracted from the sources:
Available Information Summary
- Blue Sunstone: The sources identify blue sunstone as a gemstone used in jewelry, specifically in the form of rings, beads, and cabochons. It is associated with metaphysical properties and is sometimes linked to the "Third Eye" and "Crown" chakras in spiritual contexts.
- Blue Goldstone (Related Material): While distinct from sunstone, blue goldstone is described as a synthetic material. It has a Mohs hardness of approximately 5.5. It is used for spiritual purposes to stimulate intuition and psychic abilities. Regarding care, it can be charged in sunlight or moonlight, though prolonged sun exposure may cause the color to fade.
- Market Forms: These stones are commonly found as oval pendants, beaded bracelets, and bohemian-style rings.
Because the sources lack the scientific depth and historical documentation required to meet the professional standards of the "Birthstones" project, a full-length article cannot be produced.