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 15 September 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 | Score | Lowest Price (HKD) |
|---|---|---|---|---|
| 1 | 8.04ct ROUND K SI1 | natural | 100 | HK$951,585 HKD |
| 2 | 8.03ct OVAL G VS2 | natural | 100 | HK$3,015,552 HKD |
| 3 | 7.03ct CUSHION F VS2 | natural | 100 | HK$2,293,523 HKD |
| 4 | 7.01ct PEAR I SI2 | natural | 100 | HK$688,615 HKD |
| 5 | 5.30ct CUSHION D FL | natural | 100 | HK$1,469,435 HKD |
| 6 | 5.12ct OVAL E VVS2 | lab grown | 100 | HK$79,454 HKD |
| 7 | 5.11ct HEART D IF | lab grown | 100 | HK$105,085 HKD |
| 8 | 5.06ct OVAL E IF | lab grown | 100 | HK$104,054 HKD |
| 9 | 5.04ct HEART E IF | lab grown | 100 | HK$87,362 HKD |
| 10 | 5.02ct OVAL H SI1 | natural | 100 | HK$840,304 HKD |
| 11 | 5.01ct ROUND H SI2 | natural | 100 | HK$354,261 HKD |
| 12 | 5.01ct CUSHION G SI1 | natural | 100 | HK$501,215 HKD |
| 13 | 4.71ct HEART D IF | lab grown | 100 | HK$70,485 HKD |
| 14 | 4.56ct OVAL D VVS1 | lab grown | 100 | HK$90,308 HKD |
| 15 | 4.50ct ROUND H VVS1 | natural | 100 | HK$291,700 HKD |
| 16 | 4.24ct ROUND D VVS1 | lab grown | 100 | HK$36,023 HKD |
| 17 | 4.22ct ROUND D VVS1 | lab grown | 100 | HK$32,462 HKD |
| 18 | 4.21ct OVAL D VVS1 | lab grown | 100 | HK$51,623 HKD |
| 19 | 4.16ct HEART D IF | lab grown | 100 | HK$64,600 HKD |
| 20 | 4.07ct OVAL H VVS2 | natural | 100 | HK$543,658 HKD |
| 21 | 4.03ct PRINCESS I VS2 | natural | 100 | HK$385,843 HKD |
| 22 | 4.03ct HEART E VS2 | natural | 100 | HK$617,192 HKD |
| 23 | 4.02ct HEART H SI1 | natural | 100 | HK$305,999 HKD |
| 24 | 4.01ct ROUND J SI1 | natural | 100 | HK$230,082 HKD |
| 25 | 4.01ct ROUND H SI2 | natural | 100 | HK$258,231 HKD |
| 26 | 3.96ct OVAL D FL | lab grown | 100 | HK$104,531 HKD |
| 27 | 3.91ct OVAL E VS1 | lab grown | 100 | HK$10,162 HKD |
| 28 | 3.79ct ASSCHER D FL | lab grown | 100 | HK$99,815 HKD |
| 29 | 3.67ct PRINCESS D VVS1 | lab grown | 100 | HK$32,015 HKD |
| 30 | 3.62ct ASSCHER G VVS2 | lab grown | 100 | HK$17,108 HKD |
| 31 | 3.60ct OVAL E VVS1 | lab grown | 100 | HK$60,615 HKD |
| 32 | 3.57ct HEART D IF | lab grown | 100 | HK$41,662 HKD |
| 33 | 3.52ct OVAL E VS2 | lab grown | 100 | HK$51,154 HKD |
| 34 | 3.52ct OVAL J SI1 | natural | 100 | HK$231,859 HKD |
| 35 | 3.51ct MARQUISE E VS2 | lab grown | 100 | HK$13,615 HKD |
| 36 | 3.42ct ROUND E VVS1 | lab grown | 100 | HK$19,962 HKD |
| 37 | 3.33ct ASSCHER L VS1 | natural | 100 | HK$173,987 HKD |
| 38 | 3.28ct ROUND F VS1 | lab grown | 100 | HK$5,469 HKD |
| 39 | 3.28ct PRINCESS E VVS2 | lab grown | 100 | HK$57,308 HKD |
| 40 | 3.26ct OVAL E IF | lab grown | 100 | HK$34,777 HKD |
| 41 | 3.17ct ROUND D VVS1 | lab grown | 100 | HK$7,623 HKD |
| 42 | 3.10ct HEART I SI2 | natural | 100 | HK$97,231 HKD |
| 43 | 3.09ct CUSHION D VVS2 | lab grown | 100 | HK$22,015 HKD |
| 44 | 3.08ct OVAL G VS1 | lab grown | 100 | HK$16,869 HKD |
| 45 | 3.07ct OVAL E VS2 | lab grown | 100 | HK$9,546 HKD |
| 46 | 3.07ct OVAL G VS1 | lab grown | 100 | HK$16,154 HKD |
| 47 | 3.05ct OVAL E VS2 | lab grown | 100 | HK$9,515 HKD |
| 48 | 3.05ct OVAL K SI1 | natural | 100 | HK$135,237 HKD |
| 49 | 3.04ct ROUND D VVS1 | lab grown | 100 | HK$19,531 HKD |
| 50 | 3.04ct HEART I SI2 | natural | 100 | HK$86,769 HKD |
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