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0.51ct N SI2 Round Natural Diamond

EX • N/SI2 • IGI 171549685

Shape and cutting style on the report: Round brilliant

Certificate IGI 171549685

Diamond specifications and retailer prices

From HK$2,008 HKD
As of October 31, 2026
Save HK$7,100 HKD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$9,108 HKD at NZ Jewellers · As of November 2, 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 N colour (tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 171549685. Listed at 8 retailers as of October 31, 2026, with prices from HK$2,008 to HK$9,108, a HK$7,100 spread on the same certified stone. NZ Jewellers lists it at HK$9,108. 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
N
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.8°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 171549685
Dimensions5.10 × 5.13 × 3.17 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.10 mm5.13 mm0.51 ctN / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 171549685
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$3,405 HKD|Low: HK$2,644 HKD|High: HK$3,421 HKD|Avg: HK$3,018 HKD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 4HK$2,644 HKD
Retailer 3HK$3,013 HKD
Retailer 2HK$3,028 HKD
Retailer 1HK$3,405 HKD

12 data points across 4 retailers

8 retailersHK$2,008 HKD to HK$9,108 HKD

B+
Cheapest Retailer
-
HK$2,008 HKD
Retailer 2
-
HK$2,165 HKD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
HK$2,244 HKD
View
Retailer 4
-
HK$2,644 HKD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
HK$2,707 HKD
View
B+
Retailer 6
-
HK$3,028 HKD
View
B
Retailer 7
-
HK$3,405 HKD
View
Most Expensive
C
NZ Jewellers
c8903fd2-e836-4673-a49f-d24ddcc6514f · Nov 2
HK$9,108 HKD
$1,161 USD
View
7 more retailers have this diamond
Prices start from HK$2,008 HKDSave up to HK$7,100 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.

B+
0.51ct Round
HK$2,008 HKD