Platinum marquise cut halo engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. The marquise is a long, boat-shaped diamond with two points. It looks larger than any other shape of the same weight. A halo surrounds the centre diamond with a ring of smaller diamonds for extra sparkle and a bigger look.
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The marquise cut diamond
The marquise is a long brilliant cut with a point at each end. It has the largest face-up area of any diamond shape for its weight, so it looks big for its carat weight and makes the finger look long and slender. It has a bold, vintage character. The halo follows the outline of the marquise diamond, so the shape reads clearly from across a room.
Why a halo?
A halo frames the centre diamond with a ring of small diamonds. The extra sparkle makes the centre stone look larger, so it is a good way to get a big look for less. Paired with a diamond-set band, it gives the most sparkle of all.
Why platinum?
We use 950 platinum, hallmarked in the UK. It is about 95% pure, so it is naturally white all the way through and never needs re-plating. It is heavier than gold and very hard-wearing: rather than wearing away, the metal moves over time and takes on a soft satin look, which a quick polish brings back to a high shine. It is also the best choice if you have sensitive skin.
Choosing your marquise diamond
A ratio of 1.75 to 2.25 gives the classic shape; keep the two halves even. Like the oval, a marquise can show a bow tie, so check the photos. The two points are the delicate part, and our settings protect each one with a claw.
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.
Handmade by a family jeweller
We have been making jewellery in Bourton-on-the-Water since 1969 and are members of the National Association of Jewellers. Your ring is made to order in 100% recycled metal, hallmarked, and ready in 3 to 4 weeks, with free UK delivery and free returns within 30 days.
Explore More Engagement Rings
Other metals: 18ct White Gold · 18ct Yellow Gold · 18ct Rose Gold
Other styles: Solitaire · Trilogy (3 Stone) · Bezel-Set · Diamond-Set Shoulder · Diamond-Set Band
Other diamond shapes: Round Brilliant Cut · Princess Cut · Oval Cut · Emerald Cut · Cushion Cut · Asscher Cut · Pear Shape · Heart Shape · Radiant Cut
See all: All Platinum Marquise Cut Engagement Rings · All Platinum Engagement Rings · All Engagement Rings
Frequently Asked Questions
The points are the thinnest part of the stone, so they can chip if knocked. Our marquise settings hold each point in a claw to protect it.
Yes. The ring of small diamonds adds to the spread of the centre stone, so it looks noticeably larger than it would on its own.
All precious metals mark with wear. Platinum moves rather than wearing away, so it keeps its weight and holds the diamond securely. Over time it takes on a soft satin finish, and we can polish it back to a bright shine whenever you like.
Yes. Returns are free within 30 days, and every order comes with a prepaid returns pack.