Top 50 Diamonds by Certification Score in Hong Kong
Ranked by certificate rigour. GIA and AGS stones with complete grading, clear symmetry, and verified provenance come out on top. Pricing shown in HKD.
Last updated 1 November 2026 · Based on 50 active listings ranked by certification
What Certification Score Rewards
Certification score measures the rigour and completeness of the grading report behind each diamond. It weights the grading lab (GIA and AGS lead; IGI and HRD follow; newer or less-consistent labs are lower), the presence of a polish and symmetry grade (required for Excellent-cut claims), and the completeness of the proportions data. It's not measuring the diamond itself. It's measuring how confident you can be that the grades on paper match what you'll receive.
Use this list when you're buying at a price point where certification rigour matters most. Say, above $10,000, or when the stone will be insured, resold, or given as a gift with a certificate presentation. The top of this list is where the paper trail is strongest: full GIA reports with polish and symmetry grades, complete measurement data, and a clean provenance.
A high certification score doesn't mean the stone is beautiful. It just means the grading is trustworthy. Cross-reference with quality score for stones that are both well-documented and well-made. For lab-grown, IGI tops this list more often than GIA because IGI has become the default lab-grown certifier and has the most complete reports for that segment.
| # | Diamond | Origin | Grade | Lowest Price (HKD) |
|---|---|---|---|---|
| 1 | 34.75ct ROUND F SI1 | natural | A+ | HK$18,278,496 HKD |
| 2 | 30.17ct ROUND E FL | natural | A+ | HK$21,316,202 HKD |
| 3 | 23.69ct ROUND I SI2 | natural | A+ | HK$7,184,783 HKD |
| 4 | 20.67ct RADIANT K VS2 | natural | A+ | HK$3,778,120 HKD |
| 5 | 20.66ct ROUND H SI1 | natural | A+ | HK$6,295,978 HKD |
| 6 | 20.58ct ROUND L SI2 | natural | A+ | HK$2,789,578 HKD |
| 7 | 20.45ct RADIANT H VS1 | natural | A+ | HK$7,285,852 HKD |
| 8 | 20.42ct OVAL D VS1 | natural | A+ | HK$12,801,138 HKD |
| 9 | 20.32ct OVAL D SI1 | natural | A+ | HK$11,574,228 HKD |
| 10 | 20.29ct EMERALD H VS1 | natural | A+ | HK$12,070,642 HKD |
| 11 | 20.28ct ROUND E VVS1 | natural | A+ | HK$15,115,526 HKD |
| 12 | 20.28ct EMERALD D FL | natural | A+ | HK$15,562,625 HKD |
| 13 | 20.21ct EMERALD J VS1 | natural | A+ | HK$4,541,562 HKD |
| 14 | 20.11ct HEART H VS2 | natural | A+ | HK$7,174,688 HKD |
| 15 | 20.07ct EMERALD D FL | natural | A+ | HK$15,286,323 HKD |
| 16 | 20.06ct OVAL H VS2 | natural | A+ | HK$7,049,793 HKD |
| 17 | 20.05ct EMERALD H VS2 | natural | A+ | HK$6,472,703 HKD |
| 18 | 20.01ct EMERALD L SI1 | natural | A+ | HK$3,276,286 HKD |
| 19 | 19.02ct EMERALD H VS2 | natural | A+ | HK$5,503,797 HKD |
| 20 | 18.03ct ROUND M VS1 | natural | A+ | HK$2,391,057 HKD |
| 21 | 18.00ct OVAL H VS1 | natural | A+ | HK$6,195,828 HKD |
| 22 | 17.05ct EMERALD H VS1 | natural | A+ | HK$5,363,295 HKD |
| 23 | 16.60ct CUSHION F VVS1 | natural | A+ | HK$12,714,428 HKD |
| 24 | 16.50ct OVAL J SI1 | natural | A+ | HK$4,457,862 HKD |
| 25 | 16.10ct ASSCHER D VVS2 | natural | A+ | HK$8,524,996 HKD |
| 26 | 15.63ct PEAR E FL | natural | A+ | HK$9,967,152 HKD |
| 27 | 15.53ct CUSHION I SI2 | natural | A+ | HK$1,802,420 HKD |
| 28 | 15.38ct ROUND D IF | natural | A+ | HK$18,157,173 HKD |
| 29 | 15.21ct OVAL F VS1 | natural | A+ | HK$7,586,855 HKD |
| 30 | 15.18ct ROUND E VS2 | natural | A+ | HK$6,216,667 HKD |
| 31 | 15.08ct OVAL F VS1 | natural | A+ | HK$5,163,651 HKD |
| 32 | 15.05ct OVAL F VS1 | natural | A+ | HK$5,332,766 HKD |
| 33 | 14.36ct EMERALD J VVS2 | natural | A+ | HK$3,040,718 HKD |
| 34 | 14.11ct EMERALD F VS2 | natural | A+ | HK$7,938,427 HKD |
| 35 | 14.05ct ROUND H VS1 | natural | A+ | HK$1,733,284 HKD |
| 36 | 13.86ct RADIANT F VVS1 | natural | A+ | HK$1,002,342 HKD |
| 37 | 13.84ct ASSCHER G VS2 | natural | A+ | HK$3,925,125 HKD |
| 38 | 13.84ct ASSCHER G VS2 | natural | A+ | HK$4,006,793 HKD |
| 39 | 13.70ct ROUND I VS1 | natural | A+ | HK$4,373,782 HKD |
| 40 | 13.09ct EMERALD D FL | natural | A+ | HK$11,197,366 HKD |
| 41 | 13.07ct CUSHION F VS2 | natural | A+ | HK$5,491,194 HKD |
| 42 | 13.05ct PRINCESS K SI1 | natural | A+ | HK$2,554,340 HKD |
| 43 | 12.98ct ROUND D VVS2 | natural | A+ | HK$8,277,452 HKD |
| 44 | 12.77ct MARQUISE I VVS1 | natural | A+ | HK$4,571,689 HKD |
| 45 | 12.52ct EMERALD L IF | natural | A+ | HK$1,711,445 HKD |
| 46 | 12.39ct ROUND E SI1 | natural | A+ | HK$2,455,591 HKD |
| 47 | 12.39ct OVAL D FL | natural | A+ | HK$7,353,057 HKD |
| 48 | 12.38ct ROUND E SI1 | natural | A+ | HK$4,200,257 HKD |
| 49 | 12.32ct ROUND M SI2 | natural | A+ | HK$1,216,668 HKD |
| 50 | 12.32ct CUSHION D FL | natural | A+ | HK$7,541,357 HKD |
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