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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 £27,455 GBP
HK$287,400 HKD
As of October 29, 2026
Save £22,844 GBP (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £50,299 GBP 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 GIA 6237924909. Listed at 14 retailers as of October 29, 2026, with prices from £27,455 to £50,299, a £22,844 spread on the same certified stone. MOH London lists it at £50,299. 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: £50,299 GBP|Low: £27,455 GBP|High: £53,360 GBP|Avg: £36,825 GBP|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7£27,455 GBP
Retailer 9£29,005 GBP
Retailer 2£32,042 GBP
Retailer 5£32,046 GBP
Retailer 8£32,413 GBP
Retailer 3£33,910 GBP
Retailer 4£38,871 GBP
Retailer 6£39,383 GBP
MOH London£50,299 GBP

43 data points across 9 retailers

14 retailers£27,455 GBP to £50,299 GBP

A
Cheapest Retailer
-
£27,455 GBP
HK$287,400 HKD
Retailer 2
-
£29,005 GBP
₹3,701,267 INR
View
Price last confirmed 9 days ago
Retailer 3
-
£31,088 GBP
SGD 56,290 SGD
View
Price last confirmed 21 days ago
A
Retailer 4
-
£32,042 GBP
View
A
Retailer 5
-
£32,046 GBP
$42,938 USD
View
A
Retailer 6
-
£32,413 GBP
$43,430 USD
View
Final sale: no returns
A
Retailer 7
-
£33,910 GBP
View
Retailer 8
-
£34,268 GBP
$45,915 USD
View
Price last confirmed 42 days ago
A
Retailer 9
-
£38,871 GBP
€49,603 EUR
View
Retailer 10
-
£39,338 GBP
$52,709 USD
View
Price last confirmed 39 days ago
A
Retailer 11
-
£39,383 GBP
$52,769 USD
View
Retailer 12
-
£40,367 GBP
A$83,212 AUD
View
Price last confirmed 173 days ago
Retailer 13
-
£40,851 GBP
$54,736 USD
View
Price last confirmed 39 days ago
Most Expensive
B+
MOH London
54D20B092 · Oct 29
£50,299 GBP
View
13 more retailers have this diamond
Prices start from £27,455 GBPSave up to £22,844 GBP

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
£27,455 GBP