4.092 Cts Intense Red Spinel from Luc Yen, Vietnam

This 4.092-carat natural spinel from Luc Yen, Vietnam, displays an intense red colour in a classic cushion cut. Measuring 9.86 × 8.30 × 5.81 mm, it makes an attractive centrepiece for bespoke jewellery. Bellerophon Gemlab report B77553 identifies its Vietnamese origin, transparency and even colour distribution, with no indications of any treatment. Spinel is a magnesium aluminium oxide gemstone prized for its rich colours and bright lustre. Its Mohs hardness of 8 makes it a durable choice for jewellery, while its refractive index is approximately 1.718. Notable sources include Vietnam, Myanmar, Tanzania and Sri Lanka.