Description: A very unusual and attractive Chalcedony nodule. The centre is filled by clear quartz which shows a marked degree of crystallinity. Surrounding this "eye" is pale brown Chalcodony quartz which shows thin banding of alternating light and dark laters. The most attractive feature of the specimen, however, is the distinct chatoyancy seen in the banding as the nodule is moved around under oblique light.

Location: Ethel Creek, Western Australia, Australia.