Oval|Natural|GIA

0.40ct G SI2 Oval Natural Diamond

VG • G/SI2 • GIA 2557737642

Certificate GIA 2557737642

Diamond specifications and retailer prices

From £314 GBP
$421 USD
As of October 29, 2026
Save £412 GBP (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £726 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557737642. Listed at 13 retailers as of October 25, 2026, with prices from £314 to £726, a £412 spread on the same certified stone. MOH London lists it at £726. 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

0.40
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557737642
Dimensions4.26 × 5.83 × 2.47 mm
L/W Ratio1.37
Culet sizeNone
Key to symbols
Feather
Top View
4.26 mm5.83 mm0.40 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557737642
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 57.9%

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 29
Current: £726 GBP|Low: £314 GBP|High: £735 GBP|Avg: £413 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7£314 GBP
Retailer 11£329 GBP
Retailer 9£338 GBP
Retailer 3£363 GBP
Retailer 8£363 GBP
Retailer 2£389 GBP
Retailer 10£412 GBP
Retailer 6£419 GBP
Retailer 5£444 GBP
Retailer 4£516 GBP
MOH London£726 GBP

41 data points across 11 retailers

13 retailers£314 GBP to £726 GBP

A
Cheapest Retailer
-
£314 GBP
$421 USD
B+
Retailer 2
-
£329 GBP
SGD 595 SGD
View
B+
Retailer 3
-
£338 GBP
$453 USD
View
B+
Retailer 4
-
£338 GBP
$453 USD
View
B+
Retailer 5
-
£363 GBP
$486 USD
View
B+
Retailer 6
-
£363 GBP
$486 USD
View
B+
Retailer 7
-
£389 GBP
View
B
Retailer 8
-
£412 GBP
$552 USD
View
B
Retailer 9
-
£419 GBP
$561 USD
View
Retailer 10
-
£444 GBP
View
Price last confirmed 37 days ago
B
Retailer 11
-
£516 GBP
€658 EUR
View
Most Expensive
B
MOH London
B0437BC8E · Oct 25
£726 GBP
View
11 more retailers have this diamond
Prices start from £314 GBPSave up to £412 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
0.40ct Oval
£314 GBP