is a black variety of labradorite that is found only in Finland not far from the russian border.
This material exhibits a richer range of colours compared with the normal labradorite.In the black matrix we can find magnetite and biotite, the result is a beautiful dispersion of spectrum .
The production is very scarse and only a limited quantity is of high quality.Please note that the color is visible only one one direction of the light source, if you turn the stone will be black.Polished on both side. Cut by me.
Can be match with #3589 for earrings.