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Oval|Natural|GIA

0.40ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 6555023832

Certificate GIA 6555023832

Diamond specifications and retailer prices

From £448 GBP
$600 USD
As of October 26, 2026
Save £152 GBP (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,036 GBP at MOH London · As of October 26, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555023832. Listed at 9 retailers as of October 26, 2026, with a 34% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.40
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555023832
Dimensions5.89 × 4.13 × 2.55 mm
L/W Ratio1.43
Top View
5.89 mm4.13 mm0.40 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555023832
Side View
Table 62.0%Crown 38.5°Girdle: MED-VTKPavilion 39.8°Culet: NoneDepth 61.7%

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 26
Current: £1,036 GBP|Low: £344 GBP|High: £1,405 GBP|Avg: £687 GBP
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
October 28, 2026
Retailer 7£413 GBP
Retailer 10£448 GBP
Retailer 8£483 GBP
Retailer 13£483 GBP
Retailer 11£517 GBP
Retailer 5£527 GBP
Retailer 2£548 GBP
Retailer 6£600 GBP
Retailer 3£683 GBP
Retailer 4£724 GBP
Retailer 9£964 GBP
MOH London£1,036 GBP
Retailer 12£1,405 GBP

38 data points across 13 retailers

9 retailers£448 GBP to £600 GBP

B
Cheapest Retailer
-
£448 GBP
$600 USD
B
Retailer 2
-
£483 GBP
$647 USD
View
B
Retailer 3
-
£517 GBP
$693 USD
View
B
Retailer 4
-
£527 GBP
$706 USD
View
B
Retailer 5
-
£548 GBP
View
B
Retailer 6
-
£600 GBP
€766 EUR
View
Retailer 7
-
£964 GBP
€1,230 EUR
View
Price under review
Most Expensive
MOH London
D9DAA7602 · Oct 26
£1,036 GBP
View
Price under review
7 more retailers have this diamond
Prices start from £448 GBPSave up to £152 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
0.40ct Oval
£448 GBP