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0.51ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 649450535

Shape and cutting style on the report: Round brilliant

Certificate IGI 649450535

Diamond specifications and retailer prices

From HK$1,859 HKD
As of November 5, 2026
Save HK$1,812 HKD (49%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$8,928 HKD at NZ Jewellers · As of October 27, 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 L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 649450535. Listed at 10 retailers as of November 5, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 649450535
Dimensions5.14 × 5.15 × 3.16 mm
L/W Ratio1.00
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.14 mm5.15 mm0.51 ctL / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI 649450535
Side View
Table 55.0%Crown 33.6°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.4%

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 5
Current: HK$3,672 HKD|Low: HK$1,232 HKD|High: HK$3,868 HKD|Avg: HK$2,622 HKD|-2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6HK$1,232 HKD
Retailer 3HK$1,859 HKD
Retailer 4HK$2,048 HKD
Retailer 2HK$2,079 HKD
Retailer 5HK$3,624 HKD
Retailer 1HK$3,672 HKD

20 data points across 6 retailers

10 retailersHK$1,859 HKD to HK$3,672 HKD

A
Cheapest Retailer
-
HK$1,859 HKD
Retailer 2
-
HK$1,969 HKD
View
Price last confirmed 12 days ago
A
Retailer 3
-
HK$2,079 HKD
View
Retailer 4
-
HK$2,118 HKD
View
Price last confirmed 8 days ago
Retailer 5
-
HK$2,118 HKD
View
Price last confirmed 11 days ago
Retailer 6
-
HK$2,197 HKD
View
Price last confirmed 12 days ago
Retailer 7
-
HK$2,652 HKD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
HK$3,624 HKD
View
B+
Retailer 9
-
HK$3,672 HKD
View
Most Expensive
NZ Jewellers
67278ce5-6cbe-454b-8eb5-abee5df2899c · Oct 27
HK$8,928 HKD
$1,138 USD
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from HK$1,859 HKDSave up to HK$1,812 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$1,859 HKD