Emeralds from Boyacá, Colombia

Colombia is widely regarded as the source of the world’s largest and highest quality emerald crystals supplying approximately two-thirds of the world’s emeralds to global jewellery markets every year.

Where do Colombian Coal Australia’s emeralds come from?

Most of Colombia’s emeralds come from Boyacá Department (state). It is widely known for its emerald mines containing arguably the world’s highest quality gems of this type.

Boyacá is one of the thirty-two departments of Colombia, and the remnant of Boyacá State, one of the original nine states of the “United States of Colombia”. It is centrally located within Colombia, almost entirely within the mountains of the Eastern Cordillera to the border with Venezuela, although the western end of the department extends to the Magdalena River at the town of Puerto Boyacá. The area is remote and access to the mining regions is strictly regulated. It is quite difficult and risky for foreign nationals – including Spanish speakers – to enter this region and local contacts are essential.

Mine-direct prices – no middle-men or dealers

Colombian Coal Australia is directly connected with the owners of emerald mines and is able to negotiate miners to procure world’s best quality Colombian emeralds at mine-direct prices. We are able to procure matrices, uncut emeralds, cut emeralds and polished emeralds. All emeralds we supply come with independent laboratory certification from either Colombian or American testers depending on the required language (Spanish or English) for the certificate.

Emeralds, like all colored gemstones, are graded using four basic parameters–the four Cs of Connoisseurship being colour, clarity, cut and carat weight. However, unlike diamonds, emeralds are often appraised with the naked eye.

Mining methods for Emeralds

The emerald is won exclusively by open-cut mining. The steep slopes of the emerald formation, stripped of their covering of jungle, are worked in great terraced banks, affording benches on which lines of peons stand and attack the bench below with long iron crowbars. The comparatively soft limestone and shale are easily broken away in this way without recourse to blasting (which would shatter the fragile emerald crystals) and the emerald-bearing calcite veins are carefully removed by hand and taken to a sorting room.

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