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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.

#DiamondOriginGradeLowest Price (HKD)
117.84ct CUSHION E VS2lab grownA+HK$283,323 HKD
216.72ct OVAL F VS2lab grownA+HK$219,209 HKD
316.48ct OVAL F SI1lab grownA+HK$30,157 HKD
416.45ct OVAL F SI1lab grownA+HK$46,698 HKD
516.21ct RADIANT F VS2lab grownA+HK$209,188 HKD
616.09ct EMERALD F VS2lab grownA+HK$92,673 HKD
716.08ct OVAL G VS2lab grownA+HK$45,701 HKD
815.76ct OVAL E VS2lab grownA+HK$206,624 HKD
915.71ct ROUND F VS2lab grownA+HK$159,432 HKD
1015.67ct OVAL F VS2lab grownA+HK$205,448 HKD
1115.61ct RADIANT G VVS2lab grownA+HK$208,481 HKD
1215.45ct RADIANT G VS2lab grownA+HK$169,713 HKD
1315.27ct EMERALD H VS2lab grownA+HK$42,743 HKD
1415.20ct ROUND E SI1lab grownA+HK$78,096 HKD
1515.20ct ROUND E SI1lab grownA+HK$111,134 HKD
1615.16ct EMERALD F VS2lab grownA+HK$77,892 HKD
1715.01ct ROUND E VS2lab grownA+HK$152,340 HKD
1815.00ct OVAL E VS1lab grownA+HK$182,907 HKD
1914.85ct EMERALD F VS1lab grownA+HK$104,458 HKD
2014.60ct CUSHION F VS1lab grownA+HK$122,966 HKD
2114.29ct PEAR F VS2lab grownA+HK$74,063 HKD
2214.23ct ROUND F VS2lab grownA+HK$74,785 HKD
2314.04ct RADIANT F VS1lab grownA+HK$111,872 HKD
2413.85ct ROUND F VS1lab grownA+HK$77,257 HKD
2513.73ct ROUND F VS2lab grownA+HK$72,063 HKD
2613.65ct ROUND F VS2lab grownA+HK$71,796 HKD
2713.52ct ROUND E VS1lab grownA+HK$157,101 HKD
2813.34ct EMERALD I VS2lab grownA+HK$38,114 HKD
2913.22ct RADIANT E VS1lab grownA+HK$208,304 HKD
3013.19ct OVAL E VVS2lab grownA+HK$117,152 HKD
3113.11ct RADIANT E VS1lab grownA+HK$141,450 HKD
3213.07ct ROUND E VS2lab grownA+HK$69,332 HKD
3313.06ct ROUND F VS2lab grownA+HK$68,760 HKD
3413.06ct ROUND G VS2lab grownA+HK$79,383 HKD
3512.84ct OVAL E VS2lab grownA+HK$74,613 HKD
3612.75ct ROUND F VS2lab grownA+HK$67,159 HKD
3712.69ct RADIANT E VS2lab grownA+HK$173,709 HKD
3812.64ct ROUND E VS2lab grownA+HK$67,104 HKD
3912.63ct ROUND F VS2lab grownA+HK$66,539 HKD
4012.62ct ROUND E VVS2lab grownA+HK$87,958 HKD
4112.59ct OVAL E VS2lab grownA+HK$118,376 HKD
4212.55ct ROUND F VS2lab grownA+HK$66,131 HKD
4312.55ct OVAL E VS2lab grownA+HK$117,999 HKD
4412.53ct ROUND E VS2lab grownA+HK$127,714 HKD
4512.43ct ROUND F VS2lab grownA+HK$55,116 HKD
4612.38ct ROUND E VS1lab grownA+HK$144,062 HKD
4712.36ct RADIANT E VS2lab grownA+HK$66,273 HKD
4812.34ct ROUND E VS2lab grownA+HK$65,551 HKD
4912.34ct RADIANT F VS1lab grownA+HK$76,127 HKD
5012.31ct ROUND F VS1lab grownA+HK$130,247 HKD
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