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5.51ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 774673280

Shape and cutting style on the report: Round brilliant

Certificate IGI 774673280

Diamond specifications and retailer prices

From HK$313,406 HKD
₹3,804,404 INR
As of October 31, 2026
Save HK$232,723 HKD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$546,129 HKD at MOH London · As of October 29, 2026
View at MOH London

About this 5.51ct natural round diamond

This 5.51ct natural round sits in the over five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 774673280. Listed at 15 retailers as of October 29, 2026, with prices from HK$313,406 to HK$546,129, a HK$232,723 spread on the same certified stone. MOH London lists it at HK$546,129. 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

5.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.2°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 774673280
Dimensions11.24 × 11.30 × 7.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
11.24 mm11.30 mm5.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 774673280
Side View
Table 57.0%Crown 36.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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: Oct 31
Current: HK$546,129 HKD|Low: HK$312,693 HKD|High: HK$549,766 HKD|Avg: HK$389,971 HKD|-0.7%
MOH London
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 1, 2026
Retailer 8HK$313,406 HKD
Retailer 14HK$339,483 HKD
Retailer 4HK$343,665 HKD
Retailer 6HK$351,935 HKD
Retailer 13HK$362,314 HKD
Retailer 15HK$370,463 HKD
Retailer 3HK$371,523 HKD
Retailer 7HK$373,173 HKD
Retailer 9HK$383,929 HKD
Retailer 10HK$399,927 HKD
Retailer 11HK$415,924 HKD
Retailer 2HK$420,154 HKD
Retailer 5HK$427,621 HKD
Retailer 12HK$431,921 HKD
MOH LondonHK$546,129 HKD

37 data points across 15 retailers

15 retailersHK$313,406 HKD to HK$546,129 HKD

A
Cheapest Retailer
-
HK$313,406 HKD
₹3,804,404 INR
Retailer 2
-
HK$339,483 HKD
$43,270 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
HK$343,665 HKD
$43,803 USD
View
A
Retailer 4
-
HK$351,935 HKD
$44,857 USD
View
Final sale: no returns
A
Retailer 5
-
HK$362,314 HKD
$46,180 USD
View
A
Retailer 6
-
HK$370,463 HKD
SGD 63,809 SGD
View
Retailer 7
-
HK$371,523 HKD
£37,286 GBP
View
Price last confirmed 32 days ago
A
Retailer 8
-
HK$373,173 HKD
$47,564 USD
View
A
Retailer 9
-
HK$383,929 HKD
$48,935 USD
View
B+
Retailer 10
-
HK$399,927 HKD
$50,974 USD
View
B+
Retailer 11
-
HK$415,924 HKD
$53,013 USD
View
A
Retailer 12
-
HK$420,154 HKD
€51,002 EUR
View
B+
Retailer 13
-
HK$427,621 HKD
$54,504 USD
View
B+
Retailer 14
-
HK$431,921 HKD
$55,052 USD
View
Most Expensive
B+
MOH London
02C834C4E · Oct 29
HK$546,129 HKD
£54,810 GBP
View
14 more retailers have this diamond
Prices start from HK$313,406 HKDSave up to HK$232,723 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
5.51ct Round
HK$313,406 HKD