Platinum heart shape trilogy (3 stone) engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. The heart shape is the most romantic diamond of all, a brilliant cut with a clear cleft and a neat point. A trilogy ring sets three diamonds side by side, often said to stand for your past, present and future.
The heart shape diamond
The heart is a brilliant cut with a cleft at the top and a point at the bottom. It takes real skill to cut well, and a well-cut heart has a clear outline, even lobes and plenty of sparkle. The side stones are matched to the heart 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 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 heart diamond
Choose a diamond of at least half a carat, as the heart outline is hard to see on smaller stones. A ratio close to 1.00 keeps the shape balanced. Hearts can hold colour in their lobes, so G to H is a good choice.
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.
From our workshop to your door
Each ring is made for you in our Cotswolds workshop in 3 to 4 weeks, in 100% recycled metal, and independently hallmarked. We have made fine jewellery since 1969. UK delivery is free, every order comes with a prepaid returns pack, and returns are free within 30 days.
Explore More Engagement Rings
Other metals: 18ct White Gold · 18ct Yellow Gold · 18ct Rose Gold
Other styles: Solitaire · Halo · Bezel-Set · Diamond-Set Shoulder · Diamond-Set Band
Other diamond shapes: Round Brilliant Cut · Princess Cut · Oval Cut · Emerald Cut · Cushion Cut · Asscher Cut · Marquise Cut · Pear Shape · Radiant Cut
See all: All Platinum Heart Shape Engagement Rings · All Platinum Trilogy (3 Stone) Engagement Rings · All Platinum Engagement Rings · All Engagement Rings
Frequently Asked Questions
Half a carat or more. Below that, the cleft and lobes are hard to see once the stone is set, and it can look more like a round.
Yes. The side stones are chosen to suit the size and colour of your centre diamond, so the three look balanced together.
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. Every ring can be set with a natural or lab-grown diamond from our live stock. Both are real diamonds; lab-grown stones cost less for the same size and grade.