Fluorite (LARGE bi-color "Spinel-twin") thumbnail or possibly any light

or possibly any light

and the faces on the Magnetite crystals are rather smooth and shiny

The Brookites are a bit thicker than most crystals this size

and a top tier thumbnail for any collector

Fluorite (LARGE bi-color "Spinel-twin") thumbnail or possibly any lightThe Fluorite twins from this locality are distinctive and are unique in the world, for the sharpness, gemminess and noteworthy size. Most of the twins I've seen from this area are green in color, but pink examples have been found as well. Here, we have an incredibly large "Spinel twinned" BI COLOR Fluorite specimen that is not only impressive for its size, but its remarkable gemminess. When you backlight the piece, you can see large WATER CLEAR