Allt a'Mhuillin, Loch Borrolan, Assynt, North West Highlands, Scotland
Ex. Carniege Museum, White Colleition, Ex. Cureton Minerals
Massive light blue Vishnevite in a Borolanite matrix. Borolanite is a name locally used (and named for the locale) for a variety of coarse grained nepheline syenite composed of alkali feldspar,Nepheline and/or its alteration products, Melanite and Biotite.
Flaws: Essentially massive material.