Emerald

Emerald, the green variety of Beryl, is the most famous and valuable green gemstone. Its beautiful green color, combined with durability and rarity, make it one of the most expensive gemstones. Deep green is the most desired color in Emeralds. In general the paler the color of an Emerald, the lesser its value. Very pale colored stones are not called Emeralds but rather “Green Beryl”. They are sometimes heat treated, which causes their color to turn blue and transform into Aquamarine.

Aquamarine

Aquamarine, named for the Latin phrase “water of the sea”, is the blue to blue-green variety Beryl. Beryl also contains other gem varieties, including Emerald, and some lesser known varieties such as Morganite and Heliodor.

Aquamarine ranges in color from a faint light blue to blue and bluish-green, with lighter colored stones being the more common type.

Amethyst

Amethyst is one of the most popular gemstones, and has been considered valuable since ancient times. Its name derives from the Greek “amethystos”, which means “not drunken”, as Amethyst in antiquity was thought to ward off drunkenness.

Amethyst occurs in primary hues from a light pinkish violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue. The ideal grade is called “Deep Siberian” and has a primary purple hue of around 75–80%, with 15–20% blue and (depending on the light source) red secondary hues.

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