Tag Archives: silica

Alexandrite – June Birthstone

Have you ever seen a gemstone change from one color to another right before your eyes? If not, you’re in for a treat when you see your first fine alexandrite. Raspberry red in tungsten light or firelight, teal green in direct sunlight or fluorescent light – fine alexandrite is the color-change gemstone against which all…

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Glass Isn’t Always an Imitation

Faceted Moldavite

Since the Annual Tucson Gem and Mineral Show is this month, some of the more unusual things in the colored gem world are on my mind. I wanted to take the time to comment on a part of the jewelry industry that gets overlooked and has some of the coolest science behind it. Man-made glass…

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