The Colombian emerald you see in these photos exhibits two main shades: the green inherent to the stone and the gold that comes from the pyrite.

To respect this unique configuration, Oscar Bautista cut it into a cylindrical cabochon. Thus, it can be used in a ring, pendant, or bracelet.

These are its characteristics:

Species: Natural Beryl
Variety: Emerald
Origin: Colombia
Carat Weight: 12.80 ct
Cut: Smooth Cylinder Cabochon
Dimensions*: 15.85 × 7.04 mm (Length × Diameter)
Treatment: Colour and stability enhancement using artificial resin (PermaSafe type process)
Certification: Authenticity Guarantee (Natural gemstone verified by our specialists)

*Measurements may vary slightly depending on the caliper used

About this emerald:

In addition to the green and gold, this gemstone has black and whitish tones and traits typical of what is known in Colombia as morralla:

An opaque emerald, with inclusions and small cavities on its surface, which are witnesses to its natural formation in the country's emerald-producing mountains.

Natural Colombian Emerald: 12.80 ct Smooth Cylindrical Cabochon

Name: Natural Colombian Emerald: 12.80 ct Smooth Cylindrical Cabochon
Brand: Oscar Bautista
SKU: ESM013

SKU: ESM013

€367.00

Excluding VAT

Quantity

Only 1 left in stock

For your confidence, at Oscar Bautista, we:

personally select our emeralds in Bogotá, Colombia, verifying that every stone is a natural beryl.

declare the enhancement of stability and colour through the use of resins (PermaSafe-type process), ensuring an accurate and honest technical description.

offer you maximum protection as, by operating from Portugal, all our transactions are subject to European Union consumer regulations.

Note for Intra-Community Operators (EU, except Portugal):

If you have a valid VAT number within the VIES system, please contact us to apply the tax exemption to your purchase.
Shipments to mainland Portugal are handled via TNT; international shipments are made through TNT or FedEx. If your country or region is not on the list and you are interested in this stone, please contact us.

The actual colour of this gemstone may differ from what you see online, depending on the device you use.The type of light (white or yellow) and its intensity can also influence colour perception.

These gemstones are characterized by the presence of inclusions, small cavities, and surface fissures. Further details can be found in the photographs and the general description of the stone.

Should you wish to return it, you may do so within 14 calendar days from the date you receive your order.

For more information, please consult our Terms and Conditions.
Our operations are based on a more direct and transparent supply chain, seeking to guarantee fair trade and better traceability:

Purchased at the source: We acquired this stone in the emerald centre of Bogotá, Colombia, ensuring that its value flows directly back into the local market.

Cut in Europe: Oscar Bautista cut this emerald cabochon in Portugal; his artisanal technique highlights the stone's potential while respecting its natural morphology.

Direct logistics: From Bogotá to our workshop in Portugal, the gemstone followed a route without intermediaries, eliminating unnecessary transit.
This natural emerald cabochon features a resin treatment to enhance its stability and colour (PermaSafe-type process).

Follow these guidelines to care for it:

Use cold water, mild soap, and a soft cloth for cleaning.

Avoid hard impacts and store it individually to prevent scratches.

Do not use ultrasonic cleaning, steam, or intense heat, even when set in jewellery.

Avoid contact with acetone, alcohol, perfumes, or solvents, as they can degrade the resin pigment and reduce its colour intensity.