Tennessee Blue Slag
Iron ore slag glass. A by-product of iron production in the 1800's. Slag is a byproduct of the smelting process: raw ore is heated, and the desired iron ore is separated from various natural impurities. When those impurities cool, the result is stone-like slag. Tennessee Blue is the mix of blue glass with other chemicals. This varying chemical medley can also cause the slag to appear purple, gray, or a shade of green.
Enhances communication and results in strengthening self-expression. Since Tennessee Blue slag is a stone related to creative identity, it stimulates expression and communication.