A natural emerald is a gemstone that is classified as a variety of the mineral beryl. Its characteristic green color is attributed to the presence of chromium and/or vanadium in its crystal structure. As one of the four precious gemstones, alongside diamonds, rubies, and sapphires, natural emeralds are highly valued for their beauty and rarity.

Natural emeralds are formed through geological processes that occur naturally over extended periods, involving high pressure and temperature. These gemstones are predominantly mined in countries such as Colombia, Zambia, Brazil, and Zimbabwe.

Natural emeralds are a variety of the mineral beryl, with the chemical formula Be3Al2(SiO3)6. The presence of chromium and/or vanadium impurities within the crystal structure of beryl causes the characteristic green color of emeralds.

In addition to their visual appeal, natural emeralds have cultural and historical significance. They have been prized for their beauty for thousands of years, and have been used in jewelry and as a symbol of wealth and status by various civilizations throughout history. Today, natural emeralds remain a popular choice for high-end jewelry and are often associated with luxury and sophistication.

Hardness : 7.5 to 8 on Moh's Scale
Specific Gravity : Average 2.76
Refractive Index : 1.564–1.595
Luster : Vitreous
Diaphaneity : Transparent to opaque
Crystal System : Hexagonal
Chemical Formula : Be3Al2(SiO3)6