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5.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6237924909

Certificate GIA 6237924909

Diamond specifications and retailer prices

From HK$288,621 HKD
As of October 29, 2026
Save HK$237,330 HKD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$525,952 HKD at MOH London · As of November 1, 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 GIA 6237924909. Listed at 14 retailers as of October 29, 2026, with prices from HK$288,621 to HK$525,952, a HK$237,330 spread on the same certified stone. MOH London lists it at HK$525,952. 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
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6237924909
Dimensions11.15 × 11.24 × 7.04 mm
L/W Ratio1.01
Top View
11.15 mm11.24 mm5.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6237924909
Side View
Table 58.0%Crown 35°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: HK$525,952 HKD|Low: HK$288,621 HKD|High: HK$560,936 HKD|Avg: HK$387,493 HKD|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7HK$288,621 HKD
Retailer 9HK$304,910 HKD
Retailer 4HK$336,842 HKD
Retailer 5HK$336,879 HKD
Retailer 8HK$340,739 HKD
Retailer 3HK$355,414 HKD
Retailer 2HK$406,800 HKD
Retailer 6HK$414,010 HKD
MOH LondonHK$525,952 HKD

41 data points across 9 retailers

14 retailersHK$288,621 HKD to HK$525,952 HKD

A
Cheapest Retailer
-
HK$288,621 HKD
Retailer 2
-
HK$304,910 HKD
₹3,701,267 INR
View
Price last confirmed 9 days ago
Retailer 3
-
HK$326,809 HKD
SGD 56,290 SGD
View
Price last confirmed 22 days ago
A
Retailer 4
-
HK$336,842 HKD
£33,806 GBP
View
A
Retailer 5
-
HK$336,879 HKD
$42,938 USD
View
A
Retailer 6
-
HK$340,739 HKD
$43,430 USD
View
Final sale: no returns
A
Retailer 7
-
HK$355,414 HKD
£35,670 GBP
View
Retailer 8
-
HK$360,235 HKD
$45,915 USD
View
Price last confirmed 42 days ago
A
Retailer 9
-
HK$406,800 HKD
€49,381 EUR
View
Retailer 10
-
HK$413,539 HKD
$52,709 USD
View
Price last confirmed 39 days ago
A
Retailer 11
-
HK$414,010 HKD
$52,769 USD
View
Retailer 12
-
HK$424,356 HKD
A$83,212 AUD
View
Price last confirmed 173 days ago
Retailer 13
-
HK$429,442 HKD
$54,736 USD
View
Price last confirmed 40 days ago
Most Expensive
B+
MOH London
54D20B092 · Nov 1
HK$525,952 HKD
£52,785 GBP
View
13 more retailers have this diamond
Prices start from HK$288,621 HKDSave up to HK$237,330 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$288,621 HKD