LABRADORITE / SPECTROLITE
The structure of this generally blue-gray stone in minute parallel slivers creates bright flashes of color that resemble the wings of certain butterflies. These colors differ depending on the stone’s origin and reveal their full beauty when it is cut as a cabochon.
Cartier has used a gray-blue variety for its mystery clocks.Silicate of calcium and sodium. Member of the feldspar group. Hardness: 6 to 6.5. Canada, Finland, Norway.