Sell coloured stones
Sell coloured diamonds & coloured gemstones.
Coloured diamonds and important coloured gemstones are a specialist category. Our senior gemmologist Dorina has 12 years of experience and grades every coloured stone in person.
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Feefo Platinum
GIA Member
Rapnet Trader
BJA Accredited
Est. 1976 · Family-run
In brief
Coloured diamonds — fancy yellow, pink, blue, green and brown — are valued on hue, saturation, tone and origin alongside the standard four Cs. Coloured gemstones (ruby, sapphire, emerald) are valued on origin, treatment, cut and clarity. We handle both as specialist categories with detailed working shown.
What we look for
Specifics matter.
- GIA-certified fancy coloured diamonds (yellow, pink, blue, green)
- Untreated rubies — Burmese origin, Mogok preferred
- Sapphires — Kashmir, Burmese, Sri Lankan, Madagascan
- Colombian and Zambian emeralds — minor oil treatment accepted
- Important antique gem-set jewellery in original condition
How we price it
Transparent fundamentals.
Coloured diamonds price exponentially with intensity — a Fancy Vivid is multiples of a Fancy Light. Coloured gemstones are priced primarily on origin and treatment status. Untreated rubies and sapphires from premium origins (Burma, Kashmir) carry significant premiums.
Recent purchases
Real prices we’ve recently paid.
Why people sell
An ordinary, often emotional decision.
Coloured stones are often inherited from family who knew their value but didn’t pass on the knowledge. We help sellers understand what they really have — and pay accordingly.
Common questions