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Oval|Natural|GIA

0.40ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 2556514178

Certificate GIA 2556514178

Diamond specifications and retailer prices

From £253 GBP
SGD 459 SGD
As of October 31, 2026
Save £196 GBP (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £450 GBP at Yorxs · As of October 31, 2026
View at Yorxs

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 2556514178. Listed at 9 retailers as of October 31, 2026, with prices from £253 to £450, a £196 spread on the same certified stone. Yorxs lists it at £450. 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
SymmetryGood
FluorescenceNone
Crown angle36.62°
Pavilion angle41.93°
OriginNatural
Grading LabGIA
CertificateGIA 2556514178
Dimensions5.97 × 4.13 × 2.55 mm
L/W Ratio1.45
Culet sizeNone
Top View
5.97 mm4.13 mm0.40 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2556514178
Side View
Table 58.0%Crown 36.62°Girdle: MED-VTKPavilion 41.93°Culet: NoneDepth 61.8%

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 31
Current: £337 GBP|Low: £253 GBP|High: £471 GBP|Avg: £346 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 1, 2026
Retailer 7£253 GBP
Retailer 3£287 GBP
Retailer 2£326 GBP
Retailer 5£330 GBP
Retailer 6£336 GBP
Retailer 1£337 GBP
Retailer 4£380 GBP
Yorxs£450 GBP

40 data points across 8 retailers

9 retailers£253 GBP to £450 GBP

A
Cheapest Retailer
-
£253 GBP
SGD 459 SGD
A
Retailer 2
-
£287 GBP
SGD 520 SGD
View
B+
Retailer 3
-
£326 GBP
View
B+
Retailer 4
-
£330 GBP
$442 USD
View
B+
Retailer 5
-
£336 GBP
$450 USD
View
B+
Retailer 6
-
£337 GBP
View
B
Retailer 7
-
£380 GBP
$509 USD
View
B
Retailer 8
-
£390 GBP
$523 USD
View
Most Expensive
B
Yorxs
622135568 · Oct 31
£450 GBP
€574 EUR
View
8 more retailers have this diamond
Prices start from £253 GBPSave up to £196 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
£253 GBP