Emerald Round Cabochon

This round emerald cabochon displays a grass-green color ands adds bright color to your designs; emerald is one of the world's most in-demand gemstones. Use a single cabochon to provide a flash of color or use two to make a simple and elegant pair of earrings. 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.

---

Gemstone type: Emerald
Stone shape: Round
Stone size: 3mm, 4mm
Stone type: Natural
Color: Light to Medium Green
Birthstone: May
Enhancement: Oiled (O)
Mohs hardness: 7.5–8
Refractive index: 1.566–1.6
Specific gravity: 2.7–2.8
Brand: AGTA
Mineral source: BRAZIL
Cutting center: Thailand