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Gem: Colombian Emerald Rough

Origin: Coscuez

Weight: 58.13 Ct

Dimensions: 7.95mm to 13.94mm

Number of pieces: 17 units

Treatment : None

Color: Green

Price: 260USD

Price per carat: 4.50 USD

Crystal characteristics of Coscuez emeralds

Certain characteristics of the crystal and matrix can be used to identify the source of the emeralds from Coscuez. The most characteristic feature is their frequent occurrence in aggregate-type formations with multiple terminations. The emerald crystals from Coscuez are longer than those from Muzo but shorter than those from Chivor.

Color differences and inclusions in emeralds from Coscuez.

Emeralds from Coscuez generally have good transparency with a bright yellowish-green colour. It may not be possible to predict the source of these emeralds correctly from the colour alone. Coscuez emeralds have diffuse jardins and inclusions.

Matrix characteristics of Coscuez emeralds

Coscuez emeralds occur in black and grey shale, white and grey calcite and pyrite. The combination of these components differs with each source. In the Coscuez matrix the most predominant characteristic is the presence of grey calcite.

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Geologically speaking, Colombian emeralds are said to be the purest emeralds in the world because Colombian emerald deposits are the only ones on earth found in sedimentary host rock rather than in Igneous rock. The tectonic movements that created the Andes Mountains force the raw materials of emeralds—beryllium, chromium, and vanadium—found in the ground into liquid and gaseous states. These materials, in such states, find their way into cracks in the already sedimentary medium surrounding them and then eventually cool and crystallize. A saline solution found in the sedimentary rock eventually washes out impurities such as iron that cloud other beryls from forming onto the crystallizing stone. This intricate process produces the emeralds found in the mines of Colombia.

An emerald is actually a beryllium stone that owes its special color to beryllium, chromium, and vanadium, all of which are chemical elements that are very scarce, and the reason for the color of an emerald. Colombian emeralds are much sought after, and not just because of their superb quality and color. A gem's value depends upon its size, purity, color and brilliance. Even when they are mined in the same area, each individual emerald has its own unique look that sets it apart from the rest. Dark green is considered to be the most beautiful, scarce, and valuable color for emeralds. An emerald of this color is considered rare and is only found in the deepest mines of Colombia.

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100% refund returns Policy
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SALES POLICY

We offer 30 days full refund and return policy for all buyers. You can buy from us with 100% return and refund guarantee. No questions asked for any refund or return.

Our emeralds look better in your hands than in photos. We shoot all the photos and videos with natural light conditions, so you can see the real and genuine colour of each gemstone.
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We only sell Natural Colombian emeralds

All buyers are responsible for the payment of any custom and duties for their country. We won't take responsibility on that matter, so please before bidding or buying from us, send us a message and we'll try our best to please you.

if you want to save/avoid any custom duty, please ask and we'll offer the best way to cut that cost.

If you need specific shipment or packing, please don't hesitate to ask.

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