Beautiful blue skull Highest quality carving origin Smelt Quartz is a man-made glass . The color is most often swirling blue. This glass is made from a mixture of melting natural elements with the addition of adding cobalt that brings in its deep blue color. In color psychology, blue is calming, healing, soothing, and relaxing. Blue represents the water element, clarity, inspiration, relaxation, renewal, and nobility. Blue is the color of heaven, and water, it is usually experienced as transparent, pure, and cool well packed