Sepertarian Nodule Half Magnificent work of nature. Deep yellow micro-quartz mixed with gray chalcedony, all in one neat nodule. Each specimen has been cut and is highly polished. These are about five inches in diameter and weight about five pounds. The blue, red, and purple varieties, are dyed.
Purists prefer the natural, but the colored ones are great decorative accent pieces.
All are subject to great variation. No two are the same.