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 31 July 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$607,959 HKD
2	8.03ct OVAL G VS2	natural	100	HK$2,726,626 HKD
3	7.03ct CUSHION F VS2	natural	100	HK$2,518,077 HKD
4	7.01ct PEAR I SI2	natural	100	HK$724,231 HKD
5	5.30ct HEART D FL	natural	100	HK$1,675,154 HKD
6	5.01ct ROUND H SI2	natural	100	HK$388,908 HKD
7	4.03ct PRINCESS I VS2	natural	100	HK$419,490 HKD
8	4.01ct ROUND J SI1	natural	100	HK$260,080 HKD
9	4.01ct ROUND F IF	natural	100	HK$1,169,715 HKD
10	3.52ct OVAL J SI1	natural	100	HK$236,792 HKD
11	3.33ct RADIANT L VS1	natural	100	HK$213,498 HKD
12	3.05ct OVAL K SI1	natural	100	HK$165,932 HKD
13	3.04ct HEART I SI2	natural	100	HK$94,615 HKD
14	3.04ct OVAL J SI2	natural	100	HK$122,623 HKD
15	3.02ct ROUND F VS1	natural	100	HK$422,100 HKD
16	3.01ct PEAR H SI2	natural	100	HK$65,562 HKD
17	3.01ct CUSHION J VS2	natural	100	HK$83,308 HKD
18	3.01ct OVAL I SI2	natural	100	HK$116,231 HKD
19	3.01ct OVAL K SI1	natural	100	HK$125,735 HKD
20	3.01ct OVAL J SI2	natural	100	HK$148,400 HKD
21	3.01ct ROUND H SI2	natural	100	HK$153,692 HKD
22	3.01ct ROUND F SI2	natural	100	HK$181,000 HKD
23	3.01ct PEAR F SI2	natural	100	HK$191,462 HKD
24	3.01ct OVAL F SI1	natural	100	HK$314,385 HKD
25	3.01ct ROUND G VS2	natural	100	HK$400,038 HKD
26	2.68ct CUSHION D VS1	natural	100	HK$185,031 HKD
27	2.67ct OVAL L SI2	natural	100	HK$112,769 HKD
28	2.52ct OVAL D VS1	natural	100	HK$226,462 HKD
29	2.51ct OVAL D VVS1	natural	100	HK$282,487 HKD
30	2.42ct ROUND I VVS1	natural	100	HK$111,231 HKD
31	2.34ct ROUND G SI2	natural	100	HK$64,385 HKD
32	2.04ct ROUND I SI1	natural	100	HK$105,823 HKD
33	2.03ct EMERALD D VVS1	natural	100	HK$272,226 HKD
34	2.02ct ROUND J I1	natural	100	HK$15,323 HKD
35	2.02ct PEAR F VS1	natural	100	HK$128,585 HKD
36	2.02ct CUSHION F SI1	natural	100	HK$130,192 HKD
37	2.01ct RADIANT H SI2	natural	100	HK$43,923 HKD
38	2.01ct CUSHION H VS2	natural	100	HK$46,692 HKD
39	2.01ct CUSHION H VS2	natural	100	HK$47,231 HKD
40	2.01ct PEAR H SI2	natural	100	HK$59,692 HKD
41	2.01ct ROUND G SI2	natural	100	HK$62,138 HKD
42	2.01ct ROUND H SI1	natural	100	HK$65,808 HKD
43	2.01ct ASSCHER I SI1	natural	100	HK$76,415 HKD
44	2.01ct HEART I VS2	natural	100	HK$78,769 HKD
45	2.01ct ROUND J SI2	natural	100	HK$79,154 HKD
46	2.01ct OVAL I VVS2	natural	100	HK$100,846 HKD
47	2.01ct ROUND E SI2	natural	100	HK$110,097 HKD
48	2.01ct ROUND G SI2	natural	100	HK$111,038 HKD
49	2.01ct ROUND D SI2	natural	100	HK$129,247 HKD
50	2.01ct ROUND G SI2	natural	100	HK$131,846 HKD

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