Certified 5.16ct Colombian Emerald and Diamond Gold & Platinum Ring – French Hallmarks

An exceptional and substantial gold and platinum ring featuring a magnificent 5.16-carat natural Colombian emerald, accompanied by a gemmological report from Bellerophon Gemlab, Paris.

The impressive octagonal-cut emerald displays a captivating vivid green colour, with its Colombian origin confirmed by the laboratory. The report also states that the emerald may be described as “Muzo Green” in the trade.

The gemstone has undergone only a minor degree of oil treatment, an important characteristic for a fine Colombian emerald.

Beautifully mounted in a striking two-tone gold and platinum setting, the emerald is complemented by sparkling diamond-set shoulders. The ring features a bold architectural design, with elegant geometric lines and French hallmarks.

Gemstone Details

• Gemstone: Natural Colombian Emerald
• Weight: 5.160 carats (laboratory-estimated)
• Measurements: 11.45 × 10.18 × 6.39 mm
• Shape: Octagonal
• Colour: Vivid Green
• Geographic Origin: Colombia
• Treatment: Minor amount of oil
• Colour Stability: Stable
• Fluorescence: None
• Trade Colour Description: Muzo Green

Ring Details

• Metal: Gold and platinum
• Additional gemstones: Diamonds
• Hallmarks: French
• Total weight: Approximately 13.1 grams
• Ring size: UK L

Certification

• Laboratory: Bellerophon Gemlab, Paris
• Report Number: A24329
• Report Date: 20 October 2025

Please note: The first photograph has been enhanced using AI for presentation purposes. Please refer to the original photographs for the most accurate representation of the emerald’s natural colour, inclusions and the ring’s condition. Additional photographs are available upon request.

The emerald weight is an estimate based on volume and density, as stated in the accompanying laboratory report.