Very fine, this classic Congo Dioptase is an undulating and sculptural mini that is virtually all Dioptase crystals. The Dioptases themselves are gemmy and lustrous, with a rich emerald-green colour and the ´fire´ that is so coveted. The largest of these is about 1.3 cm long. A superb colourful specimen with high overall aesthetics and only small imperfections. Superb quality from the classic Tantara Mine of Congo.