Uvite Tourmaline (Pleochroic)
Posted by: macadmin on 05.14.2020 | Filed under:

Uvite Tourmaline (Pleochroic)

Specimen # 100964
Mineral: Uvite Tourmaline (Pleochroic)
Location: Uvite Tourmaline (Pleochroic), Magnesite, Pombas Mine, Brumado (Bom Jesus dos Meiras), Bahia, Brazil
Size: 7.6 x 6.6 x 4.9 cm


This specimen features a number of uvite crystals to 1.2 cm in association with colourless magnesite crystals. The uvite crystals are sharp, lustrous, glassy and translucent, in excellent condition with no damage (one small uvite has a contact you can find with magnification). Some of the small crystals have good transparency. The 0.8 cm crystal I’ve isolated in the second and third photos is exquisite. (This crystal is at the upper right, in the first photo.)

The uvite crystal colour and pleochroism on this specimenate as pronounced as I’ve seen. The crystals have a purple hue –  not bright or vivid deep purple – and then as one views them from other angles, the subtle dark green hues (typical of Brumado uvites) are discernable. Because this piece hosts many uvite crystals in various orientations, it’s a bit easier to detect the colour variation. The greenish hues are most clearly visible through the prism faces and the purple hues are most dominant looking down through the terminations.

The far side of this specimen also hosts many very fine magnesite crystals.

A great piece, with many of these amazing uvite crystals.

Browse More Uvites and other Specimens from this Brazil Update (click here)

Additional information

Dimensions 76 × 66 × 49 cm