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Oval|Natural|GIA

3.51ct J SI1 Oval Natural Diamond

VG • J/SI1 • GIA 6402339257

Certificate GIA 6402339257

Diamond specifications and retailer prices

From £23,871 GBP
$31,984 USD
As of October 31, 2026
Save £18,572 GBP (44%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £42,442 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.51ct natural oval diamond

This 3.51ct natural oval sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6402339257. Listed at 23 retailers as of October 29, 2026, with prices from £23,871 to £42,442, a £18,572 spread on the same certified stone. MOH London lists it at £42,442. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6402339257
Dimensions11.39 × 8.59 × 5.54 mm
L/W Ratio1.33
Top View
11.39 mm8.59 mm3.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6402339257
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 64.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £42,442 GBP|Low: £24,778 GBP|High: £42,725 GBP|Avg: £29,918 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9£24,778 GBP
Retailer 2£25,095 GBP
Retailer 6£26,170 GBP
Retailer 7£26,762 GBP
Retailer 4£27,070 GBP
Retailer 8£28,158 GBP
Retailer 3£31,703 GBP
Retailer 5£34,856 GBP
MOH London£42,442 GBP

37 data points across 9 retailers

23 retailers£23,871 GBP to £42,442 GBP

B
Cheapest Retailer
-
£23,871 GBP
$31,984 USD
B
Retailer 2
-
£24,610 GBP
$32,975 USD
View
B
Retailer 3
-
£24,778 GBP
$33,200 USD
View
Final sale: no returns
B
Retailer 4
-
£25,095 GBP
₹3,202,285 INR
View
B
Retailer 5
-
£25,123 GBP
$33,662 USD
View
B
Retailer 6
-
£25,316 GBP
$33,921 USD
View
B
Retailer 7
-
£26,170 GBP
$35,065 USD
View
B
Retailer 8
-
£26,233 GBP
$35,150 USD
View
Retailer 9
-
£26,762 GBP
A$55,167 AUD
View
Price last confirmed 28 days ago
Retailer 10
-
£27,031 GBP
$36,218 USD
View
Price last confirmed 7 days ago
B
Retailer 11
-
£27,070 GBP
View
B
Retailer 12
-
£27,658 GBP
$37,059 USD
View
B
Retailer 13
-
£27,823 GBP
$37,280 USD
View
B
Retailer 14
-
£27,823 GBP
$37,280 USD
View
B
Retailer 15
-
£28,158 GBP
$37,728 USD
View
B
Retailer 16
-
£28,158 GBP
$37,728 USD
View
B
Retailer 17
-
£28,749 GBP
$38,520 USD
View
B
Retailer 18
-
£29,284 GBP
$39,237 USD
View
B
Retailer 19
-
£30,410 GBP
$40,746 USD
View
B
Retailer 20
-
£31,703 GBP
€40,456 EUR
View
B
Retailer 21
-
£31,906 GBP
$42,750 USD
View
B
Retailer 22
-
£34,856 GBP
ZAR 754,484 ZAR
View
Most Expensive
B
MOH London
79C8C1F99 · Oct 29
£42,442 GBP
View
22 more retailers have this diamond
Prices start from £23,871 GBPSave up to £18,572 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.

B
3.51ct Oval
£23,871 GBP