CaratHunter
Plans
Oval|Natural|GIA

0.40ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 2556556504

Certificate GIA 2556556504

Diamond specifications and retailer prices

From £322 GBP
SGD 583 SGD
As of October 31, 2026
Save £169 GBP (34%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £491 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 2556556504. Listed at 8 retailers as of October 31, 2026, with prices from £322 to £491, a £169 spread on the same certified stone. Yorxs lists it at £491. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.72°
Pavilion angle37.99°
OriginNatural
Grading LabGIA
CertificateGIA 2556556504
Dimensions6.26 × 4.00 × 2.40 mm
L/W Ratio1.56
Culet sizeNone
Top View
6.26 mm4.00 mm0.40 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556556504
Side View
Table 60.0%Crown 36.72°Girdle: STK-VTKPavilion 37.99°Culet: NoneDepth 59.9%

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 31
Current: £389 GBP|Low: £205 GBP|High: £491 GBP|Avg: £382 GBP|+6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
October 31, 2026
Retailer 7£205 GBP
Retailer 6£322 GBP
Retailer 3£345 GBP
Retailer 1£389 GBP
Retailer 2£414 GBP
Retailer 4£419 GBP
Retailer 5£478 GBP
Yorxs£491 GBP

41 data points across 8 retailers

8 retailers£322 GBP to £491 GBP

B+
Cheapest Retailer
-
£322 GBP
SGD 583 SGD
B+
Retailer 2
-
£345 GBP
SGD 625 SGD
View
B
Retailer 3
-
£389 GBP
View
B+
Retailer 4
-
£414 GBP
View
B
Retailer 5
-
£419 GBP
$561 USD
View
B
Retailer 6
-
£452 GBP
$606 USD
View
B
Retailer 7
-
£478 GBP
$641 USD
View
Most Expensive
B
Yorxs
537284026 · Oct 31
£491 GBP
€626 EUR
View
7 more retailers have this diamond
Prices start from £322 GBPSave up to £169 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
£322 GBP