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Oval|Natural|GIA

0.40ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 7558858763

Certificate GIA 7558858763

Diamond specifications and retailer prices

From £289 GBP
$387 USD
As of October 30, 2026
Save £221 GBP (43%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £903 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 0.4ct natural oval diamond

This 0.4ct natural oval sits in the sub-half-carat band, graded I 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 7558858763. Listed at 9 retailers as of October 30, 2026, with a 76% 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7558858763
Dimensions5.81 × 4.05 × 2.60 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Cloud, Twinning Wisp, Feather
Top View
5.81 mm4.05 mm0.40 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7558858763
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £903 GBP|Low: £276 GBP|High: £903 GBP|Avg: £463 GBP
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 4£276 GBP
Retailer 7£289 GBP
Retailer 8£339 GBP
Retailer 6£344 GBP
Retailer 9£358 GBP
Retailer 3£475 GBP
Retailer 2£510 GBP
Retailer 5£683 GBP
Diamond Exchange Canada£903 GBP

40 data points across 9 retailers

9 retailers£289 GBP to £510 GBP

Retailer 1
-
£276 GBP
$370 USD
Price last confirmed 23 days ago
B+
Retailer 2
-
£289 GBP
$387 USD
View
B+
Retailer 3
-
£339 GBP
$454 USD
View
B+
Retailer 4
-
£344 GBP
$461 USD
View
B+
Retailer 5
-
£358 GBP
$480 USD
View
B
Retailer 6
-
£475 GBP
€606 EUR
View
B
Retailer 7
-
£510 GBP
View
Retailer 8
-
£683 GBP
View
Price last confirmed 20 days ago
Most Expensive
Diamond Exchange Canada
1981546506 · Oct 30
£903 GBP
CA$1,680 CAD
View
Price under review
8 more retailers have this diamond
Prices start from £289 GBPSave up to £221 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
£289 GBP