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18ct Rose Gold Asscher Cut Trilogy (3 Stone) Engagement Rings

18ct rose gold Asscher cut trilogy (3 stone) engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. The Asscher cut is a square step-cut diamond with cut corners, much loved in the Art Deco era. A trilogy ring sets three diamonds side by side, often said to stand for your past, present and future.

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The Asscher cut diamond

The Asscher is the square cousin of the emerald cut. Its deep step facets and cut corners draw the eye into the centre of the stone, giving a hypnotic, windmill-like pattern. First cut in 1902, it is the classic Art Deco diamond. The side stones are matched to the Asscher centre diamond so the three sit in proportion.

Why a trilogy ring?

A trilogy, or 3 stone, ring sets a centre diamond between two smaller side stones. It gives a wider, fuller look across the finger than a solitaire, and the three stones are often said to stand for your past, present and future together.

Why 18ct rose gold?

18ct rose gold is 75% pure gold, warmed to a soft pink by a little copper in the alloy. It is not plated, so the colour never wears off, and it is slightly harder than yellow gold. Some of our rose gold designs set the diamond in a white platinum head for the whitest look, with the pink band around it. For a lower price, see our 9ct rose gold engagement rings.

Choosing your Asscher diamond

Like the emerald cut, the Asscher shows its clarity, so choose VS2 or better. Look for a ratio between 1.00 and 1.05 for a true square. A G or H colour keeps the step facets crisp and bright.

Choose your own diamond

Every ring is set with a centre diamond you choose yourself, natural or lab-grown, from our live stock. Each stone has its grading report, and the ring page shows the finished price before you buy.

Made to order in the Cotswolds

Every ring is made to order in our family workshop in Bourton-on-the-Water, where we have made fine jewellery since 1969. We use 100% recycled precious metal, every ring is independently hallmarked, and each one takes 3 to 4 weeks. Delivery is free across the UK, and returns are free within 30 days.

Frequently Asked Questions

Both are step cuts with cut corners. The Asscher is square, with deeper facets that draw the eye to the centre; the emerald cut is longer, with a calmer, more open look.

Yes. The side stones are chosen to suit the size and colour of your centre diamond, so the three look balanced together.

No. The colour comes from the copper in the alloy, all the way through the metal, so there is no plating to wear off. If anything, rose gold warms slightly with age.

Yes. Returns are free within 30 days, and every order comes with a prepaid returns pack.