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Oval|Natural|GIA

0.50ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2558961283

Certificate GIA 2558961283

Diamond specifications and retailer prices

From £263 GBP
As of November 6, 2026
Save £571 GBP (68%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £834 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.5ct natural oval diamond

This 0.5ct natural oval sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558961283. Listed at 20 retailers as of November 4, 2026, with prices from £263 to £834, a £571 spread on the same certified stone. MOH London lists it at £834. 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

0.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2558961283
Dimensions6.28 × 4.38 × 2.79 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.28 mm4.38 mm0.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2558961283
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.7%

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: Nov 6
Current: £834 GBP|Low: £263 GBP|High: £862 GBP|Avg: £462 GBP|-3.3%
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
Retailer 14
November 6, 2026
Retailer 2£263 GBP
Retailer 12£306 GBP
Retailer 6£333 GBP
Retailer 14£369 GBP
Retailer 13£389 GBP
Retailer 3£418 GBP
Retailer 7£442 GBP
Retailer 8£445 GBP
Retailer 11£459 GBP
Retailer 5£510 GBP
Retailer 4£516 GBP
Retailer 10£543 GBP
Retailer 9£560 GBP
MOH London£834 GBP

25 data points across 14 retailers

20 retailers£263 GBP to £834 GBP

A
Cheapest Retailer
-
£263 GBP
A
Retailer 2
-
£306 GBP
View
A
Retailer 3
-
£333 GBP
View
Final sale: no returns
A
Retailer 4
-
£362 GBP
View
A
Retailer 5
-
£369 GBP
View
Retailer 6
-
£389 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£389 GBP
View
A
Retailer 8
-
£389 GBP
View
Retailer 9
-
£418 GBP
View
Price last confirmed 16 days ago
A
Retailer 10
-
£418 GBP
View
Retailer 11
-
£427 GBP
View
Price last confirmed 24 days ago
A
Retailer 12
-
£442 GBP
View
B+
Retailer 13
-
£445 GBP
View
B+
Retailer 14
-
£459 GBP
View
B+
Retailer 15
-
£510 GBP
View
B+
Retailer 16
-
£516 GBP
View
B+
Retailer 17
-
£543 GBP
View
B+
Retailer 18
-
£560 GBP
View
Retailer 19
-
£592 GBP
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
74A3430AE · Nov 4
£834 GBP
View
19 more retailers have this diamond
Prices start from £263 GBPSave up to £571 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
0.50ct Oval
£263 GBP