Viking explorers used thin pieces of Iolite as the world’s first polarizing lens to help them determine the exact location of the sun for navigation
Rhyolite was named "streaming rock" because of its beautiful bands
This Fire Opal contains both Opal and the rhyolitic host material in which it is formed
and is sometimes referred to as “Matara Diamond” after the City in Sri Lanka near where the stone is mined
its oldest known use being in Egypt more than five thousand years ago
Black Sunstone 8mm Large Hole Round - 8 Inch JUL4-5 Viking explorers used thin piecesSunstone, 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.