Isabella Roux launches collection mixing gold and lab-grown diamonds

Isabella Roux has released a collection blending 18k yellow gold with lab-grown diamonds, featuring seven pieces that center stones of up to four or five carats.

The bespoke jeweller said that the diamonds, made in labs powered by renewable energy, balance the gold’s luxury reputation with “a new kind of ethical accessibility”.

Six rings in the new line feature large stones on gold bands, which can be commissioned with natural diamonds according to customer preferences.

A seventh ring is more minimal in design, including a natural yellow stone on a gold-wire fine line.

The range additionally spotlights a hand-strung and hand-knotted pearl necklace, a “go-to” for company founder Sadhbh Isabella Roux-Fouillet.

According to Isabella Roux, lab-grown and natural diamonds are equally important materials for jewellers, an outlook the brand said protects it from traditional market constraints and prioritises the integrity of designs.

Roux-Fouillet said: “I’ve always loved 18K yellow gold – its warmth, its glow and that specific sense of permanence. Lab-grown diamonds carry that same magic; they allow us to explore larger stones and striking proportions without compromise. It’s a real diamond, it’s stunning, and it feels aligned with the values of how we want to live now. So, why not?

“Luxury is no longer just about rarity; it’s about resonance,” Sadhbh notes. “Whether a client is drawn to the geological heritage of a natural stone or the technological innovation of a carbon-neutral, lab-grown diamond, the emotional weight remains the same. My role is to ensure that whichever stone they choose, the design feels powerful, personal and entirely without compromise.”

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