Fluorite (fluorescent) on Feldspar, with Hyalite Opal and unknown

Item Description

Fluorites from Erongo can vary greatly in appearance, but the region is renowned for the green and purple Fluorites. Here, there is both a large 3.1 cm cube and a smaller 1.3 cm cube modified by the octahedron. As classic as the Fluorites are, perhaps the most outstanding characteristic is the phenomenal blue fluorescence. I have not seen this shade of royal blue fluorescence before, and especially not in the Erongos. The intergrown, partially-etched Feldspar also fluoresces a reddish-orange. This excellent specimen is above and beyond many Erongos, for the fluorescence and for the attractive form, size, and combination.