Top 50 Diamonds by Value in United Kingdom

Our value score combines price, quality, certification and market context. These stones deliver the most per dollar across our inventory. Pricing shown in GBP.

Last updated 29 October 2026 · Based on 50 active listings ranked by value

What 'Best Value' Actually Means Here

Value score isn't just 'cheapest'. It's a composite that combines four signals: price versus peer-median for this exact shape/carat/colour/clarity bucket, our quality score, the certificate's rigour, and market context (how long this stone has been listed, how many retailers carry it, and whether price has moved recently). A stone scoring 95 on value is typically trading 15 to 30% below the median for its peer group with no compromise on quality.

This is the right list if your brief is 'I want to spend smart money.' We're surfacing diamonds that genuine market data says are under-priced relative to peers. Either because a retailer has unusual pricing, because the stone has been listed for a while, or because the specific spec isn't in high demand right now. Treat each entry as a starting point: click through, look at the photos, and check whether the quality holds up for you.

Value score can reward unusual specs that happen to be cheap but don't match what you want. A 1.5ct K/SI2 in 'Very Good' cut might top the value list but still not be what you're after. Always cross-check against quality score. The ideal buy has both value and quality in the top quartile.

#DiamondOriginGradeLowest Price (GBP)
12.08ct OVAL D IFnaturalA+£12,096 GBP
21.32ct ROUND E IFnaturalA+£6,175 GBP
31.30ct PRINCESS D IFnaturalA+£7,789 GBP
42.00ct MARQUISE E IFnaturalA+£14,329 GBP
51.34ct ROUND E IFnaturalA+£6,498 GBP
65.02ct ROUND E IFnaturalA+£115,710 GBP
73.03ct OVAL D FLnaturalA+£46,903 GBP
81.33ct ROUND E IFnaturalA+£6,653 GBP
91.33ct ROUND E FLnaturalA+£7,774 GBP
103.21ct HEART D IFnaturalA+£37,540 GBP
111.25ct ROUND D IFnaturalA+£5,279 GBP
121.55ct ROUND E FLnaturalA+£10,115 GBP
131.31ct ROUND D IFnaturalA+£6,579 GBP
145.14ct PEAR D FLnaturalA+£145,940 GBP
152.00ct HEART E IFnaturalA+£12,588 GBP
163.15ct PEAR D FLnaturalA+£48,830 GBP
172.50ct MARQUISE D IFnaturalA+£30,700 GBP
182.01ct EMERALD D IFnaturalA+£15,451 GBP
191.62ct ROUND D IFnaturalA+£9,838 GBP
201.53ct ROUND E IFnaturalA+£10,140 GBP
211.51ct ROUND E IFnaturalA+£9,392 GBP
221.33ct ROUND E IFnaturalA+£7,456 GBP
231.01ct MARQUISE D FLnaturalA+£2,919 GBP
240.68ct ROUND D IFnaturalA+£973 GBP
256.79ct ROUND D FLnaturalA+£150,111 GBP
262.56ct EMERALD G VVS1naturalA+£13,297 GBP
271.51ct OVAL D IFnaturalA+£8,747 GBP
281.42ct ROUND E IFnaturalA+£7,143 GBP
291.31ct ROUND E IFnaturalA+£7,369 GBP
301.28ct PEAR E IFnaturalA+£5,130 GBP
311.25ct ROUND E VVS2naturalA+£4,576 GBP
320.80ct PEAR D FLnaturalA+£1,724 GBP
330.60ct ROUND E IFnaturalA+£794 GBP
340.53ct ROUND D IFnaturalA+£655 GBP
3510.10ct PEAR E FLnaturalA+£452,648 GBP
364.02ct HEART D FLnaturalA+£81,929 GBP
373.03ct HEART D IFnaturalA+£45,469 GBP
383.01ct HEART E VVS2naturalA+£23,414 GBP
391.47ct ROUND E IFnaturalA+£9,469 GBP
401.35ct ROUND E IFnaturalA+£6,628 GBP
411.31ct ROUND D FLnaturalA+£6,743 GBP
421.30ct ROUND D VVS2naturalA+£4,701 GBP
431.30ct ROUND E IFnaturalA+£6,639 GBP
441.30ct ROUND D IFnaturalA+£8,218 GBP
451.01ct EMERALD E VVS2naturalA+£1,686 GBP
460.63ct ROUND E IFnaturalA+£665 GBP
470.55ct ROUND E VVS1naturalA+£520 GBP
480.54ct ROUND E IFnaturalA+£648 GBP
490.53ct ROUND D IFnaturalA+£811 GBP
500.52ct ROUND E IFnaturalA+£694 GBP
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