Wedding band with princess cut emeralds made in platinum. Measurement detail – width 0.11 inches (3 mm).
Emeralds, along with rubies and sapphires, are among the most famed of colored gemstones. For centuries, all green jewels, including tourmaline and peridot, were considered emeralds. During the 1700s, European chemists conducted experiments on beryls and emeralds, discovering they were chemically similar and had the same crystal structure.