CHAPTER 2STRIATED INTERFACE RAINBOWSPicture #156-inch-long Polished Golden Citrine Quartz from BrazilMany quartz crystals form in the ground as “twins” of various kinds.The most interesting ones are fused parallel crystals that have dramatic colored patterns within the junctions. The thin space between the crystals creates rainbows when the gap is the correct size. Each surrounding crystals […]