Top 50 Diamonds by Quality

Our quality score measures pure gemological quality. Cut, polish, symmetry, and proportions. These are the best-made stones in the market right now.

How to Read the Quality Leaderboard

The quality score is a 0-100 index that weights the things that make a diamond actually look good: cut grade first, then polish and symmetry, then proportions (table %, depth %, length-to-width ratio). It deliberately ignores color and clarity, because those grades affect paper value more than appearance, and we want this list to surface diamonds that will look exceptional in person.

Use this list when you care more about sparkle and fire than paper grades. A 1.2ct H/SI1 at 98 quality will out-perform a 1.2ct D/FL at 85 quality in every real-world lighting condition. The light return, the brilliance, the way the facets are aligned. If your priority is 'the stone that looks the most alive when she glances down at her hand,' start here.

These rankings refresh every 24 hours as new stones are added and old ones sell out. A stone in the top 10 today may be gone tomorrow. Click any entry to see full specs, multiple retailer prices (where the same certificate number is listed across our network), and side-by-side comparisons.

#DiamondOriginScoreLowest Price (GBP)
10.71ct OVAL D FLlab grown100£424 GBP
22.16ct MARQUISE D FLlab grown100£7,000 GBP
31.02ct OVAL D FLnatural100£7,165 GBP
41.21ct OVAL D FLnatural100£8,236 GBP
51.31ct EMERALD D FLnatural100£8,729 GBP
61.33ct ROUND D FLnatural100£9,271 GBP
73.02ct PRINCESS D FLlab grown100£12,504 GBP
83.11ct PRINCESS D FLlab grown100£12,874 GBP
93.20ct PRINCESS D FLlab grown100£13,252 GBP
103.35ct PRINCESS D FLlab grown100£13,866 GBP
113.22ct MARQUISE D FLlab grown100£13,890 GBP
123.02ct ROUND D FLlab grown100£14,669 GBP
131.55ct ROUND D FLnatural100£14,775 GBP
141.37ct ROUND D FLnatural100£15,646 GBP
153.37ct OVAL D FLlab grown100£16,622 GBP
163.45ct OVAL D FLlab grown100£17,016 GBP
173.49ct OVAL D FLlab grown100£17,213 GBP
181.71ct OVAL D FLnatural100£18,008 GBP
193.85ct PRINCESS D FLlab grown100£18,496 GBP
204.04ct CUSHION D FLlab grown100£21,268 GBP
214.09ct PRINCESS D FLlab grown100£22,283 GBP
224.35ct ROUND D FLlab grown100£25,039 GBP
234.66ct HEART D FLlab grown100£25,150 GBP
244.43ct ROUND D FLlab grown100£25,496 GBP
252.15ct ROUND D FLnatural100£47,126 GBP
262.11ct ROUND D FLnatural100£54,066 GBP
273.09ct PRINCESS D FLnatural100£64,920 GBP
285.11ct ROUND D FLnatural100£310,192 GBP
295.18ct ROUND D FLnatural100£317,645 GBP
305.18ct ROUND D FLnatural100£333,679 GBP
319.09ct ROUND D FLnatural100£619,401 GBP
320.74ct OVAL D IFlab grown99£780 GBP
331.07ct OVAL D IFlab grown99£1,366 GBP
341.29ct PRINCESS D IFlab grown99£2,311 GBP
351.66ct PRINCESS D IFlab grown99£2,824 GBP
362.01ct EMERALD D IFlab grown99£4,559 GBP
370.33ct ROUND D IFnatural99£641 GBP
380.51ct ROUND D IFnatural99£1,735 GBP
392.21ct ROUND D IFlab grown99£2,938 GBP
402.57ct ROUND D IFlab grown99£5,764 GBP
412.65ct ROUND D IFlab grown99£5,906 GBP
423.08ct CUSHION D IFlab grown99£10,173 GBP
432.01ct PEAR D IFnatural99£24,162 GBP
442.01ct OVAL D IFnatural99£24,345 GBP
450.32ct ROUND D FLlab grown99£154 GBP
460.33ct ROUND D FLlab grown99£157 GBP
470.34ct ROUND D FLlab grown99£161 GBP
480.48ct ROUND D FLlab grown99£200 GBP
490.50ct ROUND D FLlab grown99£205 GBP
500.50ct ROUND D FLlab grown99£205 GBP
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