U.S. State Gemstones That Are Blue
by Mark Ivan Jacobson
Blue minerals are the theme of the 2016 Tucson Gem and Mineral Show.®
Abstract
Blue Minerals: Exploring Cause & Effect
by Elise A. Skalwold and William A. Bassett
From its vast expanses of cerulean waters to its azure heavens above, our world is dominated by blue, so it is no wonder that the color blue is favored by many across cultures and throughout the ages.
Abstract
