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912 Live Oak Park Rd South
Fallbrook, CA, 92028
United States

+1 (760) 728-9121

Pala International has consistently earned its reputation as the direct source for the finest colored stones.

Sphalerite and Wurztite 2016 01

Sphalerite from Spain
&
Wurtzite from Tanzania

Cousins. Left, sphalerite from Spain, 11.34 ct., 12.8 x 12.8 x 8.5 mm. Right, rare wurtzite from Mahenge, Tanzania, 5.81 ct., 12.4 x 8.3 x 6.2 mm. Both of these stones were custom cut by Brett Kosnar. Prices available upon request. (Photo: Mia Dixon)

Cousins. Left, sphalerite from Spain, 11.34 ct., 12.8 x 12.8 x 8.5 mm. Right, rare wurtzite from Mahenge, Tanzania, 5.81 ct., 12.4 x 8.3 x 6.2 mm. Both of these stones were custom cut by Brett Kosnar. Prices available upon request. (Photo: Mia Dixon)

This duo has similar upbringings but very different features. Born of zinc and sulfur, these two minerals could make great ore for extracting zinc, but in this case they crystallized into fine specimens.

Sphalerite is a low-temperature polymorph of ZnS while wurtzite is the high-temperature polymorph. Beyond the technical relationship lie two very different jewels. The sphalerite is a bright and happy yellow hue with high dispersion and scintillation. The wurtzite on the other hand has a dark and intense ruby-like hue with an unusual metallic sheen. These are great collectable gems with varying beauty and cool optical properties.

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