Oval|Natural|GIA

0.50ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 6551718567

Certificate GIA 6551718567

Diamond specifications and retailer prices

From £306 GBP
As of November 6, 2026
Save £648 GBP (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,298 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 0.5ct natural oval diamond

This 0.5ct natural oval sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551718567. Listed at 13 retailers as of November 4, 2026, with a 212% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551718567
Dimensions6.70 × 4.24 × 2.63 mm
L/W Ratio1.58
Culet sizeNone
Key to symbols
Crystal
Top View
6.70 mm4.24 mm0.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551718567
Side View
Table 55.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £306 GBP|Low: £306 GBP|High: £967 GBP|Avg: £545 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1£306 GBP
Retailer 7£382 GBP
Retailer 3£436 GBP
Retailer 5£504 GBP
Retailer 2£505 GBP
Retailer 4£610 GBP
Retailer 6£954 GBP

30 data points across 7 retailers

13 retailers£306 GBP to £954 GBP

A
Cheapest Retailer
-
£306 GBP
A
Retailer 2
-
£353 GBP
View
A
Retailer 3
-
£382 GBP
View
Final sale: no returns
Retailer 4
-
£414 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£436 GBP
View
Retailer 6
-
£445 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£477 GBP
View
Price last confirmed 10 days ago
A
Retailer 8
-
£504 GBP
View
A
Retailer 9
-
£505 GBP
View
A
Retailer 10
-
£514 GBP
View
B+
Retailer 11
-
£610 GBP
View
B
Retailer 12
-
£954 GBP
View
Most Expensive
NZ Jewellers
dff5174f-b7d5-4a14-9110-eabd59f24bfd · Oct 27
£1,298 GBP
$1,737 USD
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from £306 GBPSave up to £648 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
£306 GBP