This is a superb display specimen. The main fluorite cube (3.8 cm on the diagonal, 2.8 cm on edge) is perched perfectly at the top, angled face-on, such that the colour zoning is very clear. It contrasts with light matrix and smaller light green fluorites. The fluorite crystals on the piece are sharp, translucent to transparent and have good lustre. Strongly fluorescent under UV, as shown in the last photo. In excellent condition, with one small chip at the right hand side corner of the main crystal and a clean contact at the back (the chip fades into the rest of the crystal and isn’t obvious unless you light the specimen with direct light from the right, and in any lighting it is minor relative to the piece; the contact is highlighted in the fifth photo, very clean and not seen as displayed). Stands perfectly for display as photographed. A striking deep green fluorite – jumps out from across the room.
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About These Madagascar Fluorites
Discovered in 2017, this Madagascar green fluorite is from Mandrosonoro, Ambatofinandrahana, Amoron’i Mania. The green varies in darkness from specimen to specimen, and the hue is reminiscent of the specimens produced at the Rogerley Mine (Frosterley, Durham, England).
The apparent colour of these fluorite specimens varies depending upon light source – these photos are adjusted to basic daylight, shade (same as all specimen photos on the website), and this is the lighting that brings out their colour the best. However, in actual daylight, these fluorites exhibit varying degrees of fluorescence, from faint to obvious blue (not as strongly as with Rogerley fluorites). Under UV lighting, they fluoresce bright blue-purple.
The Mandrosonoro fluorites are collected by local inhabitants and the quality of the first pieces I saw (in 2018) was very poor. On the whole, the quality of almost all pieces available to date has remained poor with lots of damage – the specimens in this update are of exceptional quality for the find.