Vibrant and nuanced coloured gemstone jewellery reflects the changing season, but is also becoming a permanent addition to ...

One common process used to alter gemstones is the “quench-crackle and dye” treatment, in which a heated stone is quenched in room-temperature water, inducing fractures that allow dye to penetrate the ...

Luxury buyers’ appetite to experience artisanal processes is fuelling demand for journeys to the sources of stones ...

Discover the rare gemstones rising in value in 2025 from Paraíba tourmaline to fancy diamonds. Experts reveal the most ...

18:17, Tue, Nov 4, 2025 Updated: 18:17, Tue, Nov 4, 2025 Lady Kitty Spencer has once again channelled her late aunt’s signature timeless royal glamour, rocking an enchanting look in Monaco. Princess ...

In the 1950s, Sauer made headlines with an 80-pound aquamarine he christened Martha Rocha, after the then Miss Brazil. Its vivid blue reminded him of her eyes, he said. Carved into 50,000 carats of ...

Figure 1. Six of the 13 cuprian liddicoatite tourmalines from this study. The faceted stones weigh 1.59–9.63 ct (average 3.95 ct). They are transparent and have greenish blue, green-blue, and green ...