Characteristics of Emerald:

Chemical Name: Aluminum beryllium silicate

Formula: Be₃Al₂(SiO₃)₆

Colors: Emerald-green to green, yellow-green to blue

Structure: Hexagonal

Hardness: 7.5-8

Specific Gravity: 2.7-2.8

Refractive Index: 1.565-1.602

Lustre: Vitreous

Streak: White

Locations: Colombia, Zambia, Brazil, Zimbabwe

What is Emerald? 

One of the most desirable gemstones, Emeralds are the rich green variety of beryl, the mineral found in igneous, metamorphic, and sedimentary rocks. Most Emerald have numerous inclusions and internal flaws, and these imperfections are unique to each stone. For jewelry, the brittle gem is usually faceted in its signature Emerald cut. this is a step, or trap cut which combines a rectangular shape and shortened corner facet, maximizing the Emerald’s distinctive green color, and protecting it from external damage and internal stress.