|Figure 1. An assortment of chalcedony specimens from the |
collection site. Photo October, 2012 by© Luke Sattler .
A Luke Sattler specimen.
|Figure 2. Image of one of the chalcedony specimens found near Hartsel, Colorado. |
Photo October, 2012 by© Luke Sattler . A Luke Sattler specimen.
Smigle, B. (2012 ). Botryoidal gems . Retrieved from http://www.bwsmigel.info/GEOL.115.ESSAYS/Gemology.Botryoidal.html