Bicolor Sunstone 8mm Round - 15-16 Inch a grade is a deep blue metamorphic

is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color

is desired by some collectors as proof of a natural stone

or polished

It is also one of the hardest

a Venetian monk tipped molten copper into a vat of molten glass

Bicolor Sunstone 8mm Round - 15-16 Inch a grade is a deep blue metamorphicSunstone, a variety of Feldspar, is aptly named for its shades of gold, orange, red and brown, as well as its iridescent sparkle. As the stone catches the light, inclusions of Goethite or Hematite refract the light between the layers of the crystal, producing the effect of the stone seeming to shine from within.