This AA-grade octagon emerald is a perfect way to add classic, timeless emerald green to your jewelry designs. This stone, mined in Brazil, goes well with pieces that have an ancient style and pairs particularly well with yellow gold. Emerald is the birthstone for May.
Emerald, a green variety of beryl, gets its color from traces of chromium and vanadium in its crystalline structure. Many emeralds are treated with Opticon or oil to enhance their color. All Rio Grande emeralds have been oiled; we do not offer emeralds treated with Opticon.
Also sometimes called an 'emerald cut,' the octagon cut has a rectangle shape and cut corners. Its facets are concentric planes that resemble stair-steps around the circumference of the stone, above and below the girdle.
• Care: Clean with warm, soapy water; never clean using steam or ultrasonics.
• Unless precisely calibrated to an exact size, gemstone sizes vary slightly. Rio allows a tolerance of +/– 0.1mm for gemstones 4mm and smaller.