This incredibly beautiful and rare stone first arrived on the gemstone market around September 1996. Quantum-Quattro® Silica contains bright medium blues, dark royal blues, dark forest and light greens. It is a combination of shattuckite (royal blue), chrysocolla (robin’s egg blue), dioptase (forest green), malachite (light green) with smoky quartz all combined in one swirling mix of colors. This unusual stone is a recent find and found only in Nambia, Africa. The variety of colors and combinations in each slab is unending and every piece is different.