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Round|Natural|GIA

0.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 7551317215

Certificate GIA 7551317215

Diamond specifications and retailer prices

From HK$3,036 HKD
As of November 6, 2026
Save HK$9,893 HKD (77%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$12,929 HKD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7551317215. Listed at 15 retailers as of November 4, 2026, with prices from HK$3,036 to HK$12,929, a HK$9,893 spread on the same certified stone. NZ Jewellers lists it at HK$12,929. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 7551317215
Dimensions5.09 × 5.12 × 3.19 mm
L/W Ratio1.01
Key to symbols
Twinning Wisp, Feather, Cloud
Top View
5.09 mm5.12 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7551317215
Side View
Table 57.0%Crown 35°Girdle: THN-MEDPavilion 41.4°Culet: NDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$12,929 HKD|Low: HK$3,036 HKD|High: HK$13,219 HKD|Avg: HK$5,342 HKD|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 2HK$3,036 HKD
Retailer 3HK$3,279 HKD
Retailer 4HK$3,515 HKD
Retailer 7HK$3,985 HKD
Retailer 15HK$4,127 HKD
Retailer 5HK$4,401 HKD
Retailer 12HK$4,440 HKD
Retailer 6HK$4,503 HKD
Retailer 11HK$4,762 HKD
Retailer 9HK$5,092 HKD
Retailer 13HK$5,154 HKD
Retailer 8HK$5,570 HKD
Retailer 10HK$5,727 HKD
Retailer 14HK$9,524 HKD
NZ JewellersHK$12,929 HKD

28 data points across 15 retailers

15 retailersHK$3,036 HKD to HK$12,929 HKD

A
Cheapest Retailer
-
HK$3,036 HKD
A
Retailer 2
-
HK$3,279 HKD
View
A
Retailer 3
-
HK$3,515 HKD
View
Retailer 4
-
HK$3,985 HKD
View
Price last confirmed 14 days ago
A
Retailer 5
-
HK$4,127 HKD
View
Retailer 6
-
HK$4,401 HKD
View
Price last confirmed 10 days ago
A
Retailer 7
-
HK$4,440 HKD
View
Retailer 8
-
HK$4,503 HKD
View
Price last confirmed 8 days ago
A
Retailer 9
-
HK$4,762 HKD
View
A
Retailer 10
-
HK$5,092 HKD
View
A
Retailer 11
-
HK$5,154 HKD
View
B+
Retailer 12
-
HK$5,570 HKD
View
B+
Retailer 13
-
HK$5,727 HKD
View
B
Retailer 14
-
HK$9,524 HKD
View
Most Expensive
B
NZ Jewellers
5725664b-4f38-49c7-bb37-be002fbda403 · Nov 4
HK$12,929 HKD
$1,648 USD
View
14 more retailers have this diamond
Prices start from HK$3,036 HKDSave up to HK$9,893 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Round
HK$3,036 HKD