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Oval|Natural|GIA

0.40ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 2557856411

Certificate GIA 2557856411

Diamond specifications and retailer prices

From £185 GBP
$248 USD
As of October 29, 2026
Save £56 GBP (23%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £241 GBP at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2557856411. Listed at 3 retailers as of October 29, 2026, with prices from £185 to £241, a £56 spread on the same certified stone. 77 Diamonds lists it at £241. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557856411
Dimensions5.70 × 4.03 × 2.67 mm
L/W Ratio1.41
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
5.70 mm4.03 mm0.40 ctI / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2557856411
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.3%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: £241 GBP|Low: £185 GBP|High: £243 GBP|Avg: £210 GBP|+2.7%
77 Diamonds
Retailer 2
Retailer 3
October 31, 2026
Retailer 2£185 GBP
Retailer 3£190 GBP
77 Diamonds£241 GBP

39 data points across 3 retailers

3 retailers£185 GBP to £241 GBP

B+
Cheapest Retailer
-
£185 GBP
$248 USD
Final sale: no returns
B+
Retailer 2
-
£190 GBP
SGD 344 SGD
View
Most Expensive
B+
77 Diamonds
OVCPJXH2UMF7 · Oct 31
£241 GBP
View
2 more retailers have this diamond
Prices start from £185 GBPSave up to £56 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
£185 GBP