Natural Black Opal · 1.61 ct · Pear · Mixed Cut

This individually documented natural Black Opal is presented by Natural Gems Belgium with its specimen-specific identification, measurements and recorded characteristics. Weighing 1.61 carats, this transparent gemstone displays a dark brown body colour combined with visible play-of-colour, creating shifting spectral flashes as the stone is viewed from different angles and under changing light.

The gemstone has been fashioned into an elegant pear shape with a mixed cut, measuring approximately 13.67 × 7.46 × 3.95 mm. Its cutting style provides a broad visual presentation of the material and allows the play-of-colour to remain a central feature of the gemstone’s appearance.

Opal is a hydrated amorphous form of silica and differs structurally from crystalline gemstones. Its characteristic play-of-colour is produced by the interaction of light with the internal arrangement of microscopic silica spheres, which can diffract light into different colours of the visible spectrum. The strength, distribution and colours of this effect can vary across the stone and with viewing angle.

This specimen has a dark brown body tone, which provides a contrasting background against which the play-of-colour can become more visually pronounced. Its transparent character also contributes to the depth and changing appearance of the internal colour effects.

The gemstone is accompanied by an ALGT Colored Stone Identification Report and is presented as a certified and sealed individual specimen.

ALGT Report Number: 13903538

The laboratory records an indication of smoke treatment for this gemstone. This treatment is disclosed as part of the documented characteristics of the specimen and may influence the body colour and visual contrast of the Opal.

As a natural Opal, internal colour distribution, fine inclusions, growth-related structures and minor surface characteristics may occur. These features form part of the individual character of the material and may contribute to the changing visual appearance of the gemstone.

Every gemstone presented by Natural Gems Belgium is individually documented according to its recorded identification, measurements and specimen-specific characteristics.

With its distinctive dark brown body colour, visible play-of-colour, elegant pear form and independent ALGT identification, this 1.61 ct natural Opal offers an unusual combination of optical character and documented individuality for collectors or bespoke jewellery applications.