Sapphire Engagement Rings
Tough enough for a ring worn every day. Hardness 9.

Gemstone engagement rings / Emerald
Emerald is the green gemstone, not to be confused with an emerald-cut diamond, which is a shape. It’s a beautiful, romantic choice, but it’s more fragile than it looks. Here’s what to know before you choose one for every day.
In short: Emerald is hard but brittle, and almost every one contains visible marks and has been treated with oil or resin to improve clarity. It can work as an engagement ring if you choose a protective setting and accept that it needs care.
Green
Illustration
Everyday wear
Hard but brittle, and almost always has inner marks. Choose a protective setting.
Hardness (Mohs scale) is resistance to scratching. Toughness, how well a stone resists chipping and cracking, matters too, which is why our verdict isn't based on hardness alone.
What to know
Emeralds are routinely filled with oil or resin to make inner cracks less visible. It’s accepted practice, but the amount matters: ask whether the treatment is minor, moderate or significant. A lab report will say.
Unlike diamonds, emeralds are expected to have visible inclusions. A “clean” emerald is very rare and priced accordingly. Judge it by colour first: a lively, even green.
An emerald-cut ring is a rectangular diamond shape, named because it was first used on emeralds. If you want the green stone, search for “emerald stone engagement ring” to avoid the mix-up. See our guide to emerald-cut diamonds below.
Looking for the diamond shape instead? See emerald-cut diamond engagement rings.
Prices
Real prices, not estimates: the range across 21 UK retail listings we checked in October 2026.
From
£499
Typical
£1,750
Up to
£6,500
4 of the 21 were lab-created emeralds. 9ct gold rings with small emeralds start around £500; 18ct gold and platinum rings with a 1ct-plus stone mostly sit between £1,500 and £3,000.
For comparison: a 1ct round diamond solitaire in 18ct white gold costs about £3,900–£5,600 in Hatton Garden, or £1,650–£2,850 with a lab-grown diamond. See our Hatton Garden price guide.
Before you buy
Yellow gold makes the green look richer and is the traditional pairing. Platinum and white gold give a cooler, more modern look.
A diamond halo or a bezel (a metal rim around the stone) protects it best. Emerald-cut emeralds in a three-stone ring are the classic Art Deco look.
Coloured stones vary far more than diamonds, so see the actual stone in daylight before you commit. Many Hatton Garden jewellers will source a emerald for a bespoke ring. Compare them in our independent jeweller reviews, or start designing online.
Or see every stone side by side in our gemstone engagement ring guide.
It can be, with care. Emerald is fairly hard (7.5–8) but brittle, so a hard knock can chip it. Choose a protective setting, take it off for the gym and heavy work, and it will last.
Emeralds form in conditions that almost always leave inclusions and tiny cracks. It’s expected. Most are treated with oil or resin to make them less visible.
Across 21 UK retail listings we checked in October 2026, emerald engagement rings ranged from £499 to £6,500, with a typical (median) price of £1,750. 4 of the 21 were lab-created emeralds. 9ct gold rings with small emeralds start around £500; 18ct gold and platinum rings with a 1ct-plus stone mostly sit between £1,500 and £3,000.
Emerald is 7.5–8 on the Mohs hardness scale, where diamond is 10. Our verdict: fine in a ring, worn with some care. Hard but brittle, and almost always has inner marks. Choose a protective setting.