Emerald 4mm Round Faceted Gemstone, AAA-Grade

This AAA-grade round emerald is a perfect way to add timeless emerald green to your jewelry designs. This gemstone, mined in Brazil, shows the superior cut, color saturation and active scintillation required to be classified as a top-quality AAA-grade gemstone. Emerald is ideal for designs that have an ancient style; it pairs particularly well with yellow gold, and 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. Round-cut gemstones are highly popular and the most commonly available. Rio round gemstones are calibrated for size and hand inspected to ensure maximum attractiveness. Larger sizes are available by special order.

• Gemstone Type: Emerald
• Stone Shape: Round
• Stone Size: 4mm
• Stone Type: Natural
• Color: Green
• Birthstone: May
• Enhancement: Oiled (O)
• Grade: AAA
• Mohs Hardness: 7.5–8
• Refractive Index: 1.56–1.602
• Specific Gravity: 2.68–2.78
• Brand: AGTA
• Weight: 0.000 kg