19BL02 Bournonite on Quartz
Machacamarca District (Colavi District), Saavedra Province, Potosi Department, Boliviah
5.1x 4.9x 4.6 cm
$600
One of only two examples of bournonite crystals with quartz that I was able to obtain. This piece features a cluster of crystals with exceptional luster and textbook "cogwheel" form, perched on a matrix shared by numerous colorless quartz crystals. Very well balanced with a quite "refined" appearance. There is only minor edge chipping, but you have to look closely to see it. Probably in my top 3 favorites for the update.
The last time this mine produced particularly good lustrous crystals was 2012-- there was another find of large blocky crystals around 2015, but they didn't have much going for them as far as luster was concerned, nor did I see any on matrix.
