Top 50 Diamonds by Quality in United States

Pure gemological quality: cut, polish, symmetry, proportions. The best-made diamonds available right now. Pricing shown in USD.

Last updated 1 November 2026 · Based on 50 active listings ranked by quality

How to Read the Quality Leaderboard

The quality score is a 0 to 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 throughout the day 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.

#DiamondOriginGradeLowest Price (USD)
18.25ct ROUND D FLlab grownA+$51,907 USD
28.25ct ROUND D FLlab grownA+$61,554 USD
37.52ct ROUND D FLlab grownA+$38,831 USD
47.07ct ROUND D FLlab grownA+$33,921 USD
57.05ct ROUND D FLlab grownA+$33,295 USD
67.05ct ROUND D FLlab grownA+$39,331 USD
77.04ct ROUND D FLlab grownA+$36,438 USD
86.39ct ASSCHER D FLlab grownA+$27,732 USD
96.39ct ASSCHER D FLlab grownA+$30,225 USD
106.35ct OVAL D FLlab grownA+$36,837 USD
116.13ct ROUND D FLlab grownA+$12,891 USD
126.13ct ROUND D FLlab grownA+$15,052 USD
136.13ct ROUND D FLlab grownA+$53,944 USD
146.09ct ASSCHER D FLlab grownA+$28,808 USD
156.09ct ASSCHER D FLlab grownA+$35,510 USD
166.06ct ROUND D FLlab grownA+$17,364 USD
176.05ct ROUND D FLlab grownA+$16,822 USD
186.05ct CUSHION D FLlab grownA+$21,930 USD
196.02ct ROUND D FLlab grownA+$16,085 USD
206.01ct ROUND D FLlab grownA+$16,059 USD
215.74ct ROUND D FLlab grownA+$8,439 USD
225.62ct ROUND D FLlab grownA+$6,327 USD
235.58ct CUSHION D FLlab grownA+$29,212 USD
245.51ct ROUND D FLlab grownA+$6,951 USD
255.51ct ROUND D FLlab grownA+$8,426 USD
265.50ct ROUND D FLlab grownA+$8,411 USD
275.50ct ROUND D FLlab grownA+$9,903 USD
285.42ct ROUND D FLlab grownA+$6,109 USD
295.41ct ROUND D FLlab grownA+$6,098 USD
305.38ct ROUND D FLlab grownA+$8,237 USD
315.32ct ROUND D FLlab grownA+$8,150 USD
325.31ct ROUND D FLlab grownA+$8,135 USD
335.29ct ROUND D FLlab grownA+$6,530 USD
345.29ct EMERALD D FLlab grownA+$17,984 USD
355.29ct ROUND D FLlab grownA+$38,405 USD
365.28ct ROUND D FLlab grownA+$8,092 USD
375.28ct ROUND D FLlab grownA+$8,092 USD
385.27ct ROUND D FLlab grownA+$8,077 USD
395.26ct ROUND D FLlab grownA+$6,774 USD
405.26ct ROUND D FLlab grownA+$8,063 USD
415.24ct ROUND D FLlab grownA+$5,374 USD
425.22ct ROUND D FLlab grownA+$6,597 USD
435.17ct ASSCHER D FLlab grownA+$27,506 USD
445.16ct ROUND D FLlab grownA+$19,050 USD
455.11ct ROUND D FLlab grownA+$37,099 USD
465.10ct ROUND D FLlab grownA+$7,831 USD
475.10ct RADIANT D FLlab grownA+$11,324 USD
485.10ct EMERALD D FLlab grownA+$12,816 USD
495.10ct EMERALD D FLlab grownA+$13,274 USD
505.09ct ROUND D FLlab grownA+$7,816 USD
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