沒有保留價 - 1 pcs 藍色 藍寶石 - 5.81 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 无加热

天然蓝宝石 – 5.81 克拉 – 深蓝/深蓝色调 – ALGT 认证

Fine natural sapphire in a rectangular baguette step cut, displaying a rich deep to dark blue colour with good transparency. The stone has a classic, elegant appearance and clean geometry, making it suitable for high-end jewellery or as a collector’s gemstone.

The sapphire has been independently certified by ALGT (Antwerp Laboratory for Gemstone Testing). According to the report, there are no indications of heating, which enhances the desirability of the stone.

Gemstone Specifications

Gemstone: Natural Sapphire

Species: Natural Corundum

Shape & Cut: Rectangle, Baguette Step Cut

Carat Weight: 5.81 ct

Measurements: 12.07 × 8.90 × 3.66 mm

Colour: Deep / Dark Blue

Transparency: Transparent

Treatment: No indications of heating

Certification

Laboratory: ALGT – Antwerp Laboratory for Gemstone Testing

Report Number: 49346676

Report Date: 18 January 2026

Certificate included (see photos)

Additional Information

The stone is shown magnified; photos are part of the description

Colour may appear slightly different depending on lighting and screen settings

Stone is loose (not mounted)

The gemstone will be carefully packed and shipped insured.