Emerald is a gemstone and a variety of the mineral beryl (Be₃Al₂(SiO₃)₆) colored green by trace amounts of chromium and sometimes vanadium.^[2] Beryl has a hardness of 7.5–8 on the Mohs scale.^[2] Most emeralds are highly included,^[3] so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate.

Etymology

The word “emerald” is derived (via Old French: esmeraude and Middle English: emeraude), from Vulgar Latin: esmaralda/esmaraldus, a variant of Latin smaragdus, which originated in Ancient Greek: σμάραγδος (smaragdos; “green gem”).^[4]

Emeralds, like all colored gemstones, are graded using four basic parameters–the four Cs of connoisseurship: color, clarity, cut and carat weight. Normally, in the grading of colored gemstones, color is by far the most important criterion. However, in the grading of emeralds, clarity is considered a close second. A fine emerald must possess not only a pure verdant green hue as described below, but also a high degree of transparency to be considered a top gem.^[5]

In the 1960s, the American jewelry industry changed the definition of emerald to include the green vanadium-bearing beryl. As a result, vanadium emeralds purchased as emeralds in the United States are not recognized as such in the UK and Europe. In America, the distinction between traditional emeralds and the new vanadium kind is often reflected in the use of terms such as “Colombian emerald”.^[6]

Gem Type: Emerald

Locality : Zambia

Treatment : Natural 100 %

The Color and Lustor of this stone is very good .

Our goal is to provide courteous and friendly customer service to make your acquisition of our gems a pleasant and exciting experience.

Money back guarantee within 14 days of delivery.