Emerald is a variety of the mineral beryl and is one of the most important gemstones.  In it's initial form, beryl is colorless. It gets its color by the presence of minute amounts of metallic oxides. Medium light to medium dark tones of green beryl are called emeralds. top emerald origin are Columbian, Zambian, Russian/Siberian, Brazilian etc. In Vedic Astrology, it is worn for planet mercury. It develops a person's reasoning ability and arithmetic skills.

• Group: Beryl
• Refractive index: 1.577-1.583
• Birefringence: 0.005-0.009
• Specific gravity: 2.72/ +0.18, -0.05
• Crystal system: Hexagonal
• Hardness: 7.5-8
• Inclusions: 2 phase, 3 phase inclusions, Emerald may be oiled
• Origin: Colombia, Zambia, Brazil, Ethiopia, and Zimbabwe.