A popular scarf for Christmas shopping in 2013, but an enduringly attractive image that we think works well as an artwork.
Agate is a colourful variety of quartz, and other quartz varieties include amethyst, opal, onyx, jasper, and Tiger’s Eye. You can see those 3-dimensional quartz-like qualities in this image.
It was named after the river Achates by Theophrastus, a Greek philosopher and naturalist.
It is associated with volcanic rocks, and has variations including Mexican, dendritic, and rainbow or banded agate.