Copper Slag (blue), 7.72 cts.

Beautiful swirls in varying hues of blue to greenish-blue glassy slag by-product of copper ore smelting during the 18th century. Hand cut & polished to a vitreous (glassy) luster.  Flat, polished back with beveled edge for ease of setting. You will receive the exact gemstone shown in photos. Weight: 7.72 carats Length: 18.26 mm Width: 11.55 mm Height: 5.46 mm Stone Species: Copper Slag -Variety: - Trade Name(s): Slag Glass, blue slag, iron slag, copper slag Origin: Germany Enhancement(s): (N) Natural ---------------------------------------------- (N) Natural No modification; natural stones which are not currently known to be enhanced (or currently has no known modification process).