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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6562430054

Certificate GIA 6562430054

Diamond specifications and retailer prices

From £327 GBP
As of November 5, 2026
Save £336 GBP (51%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £663 GBP at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded G 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 6562430054. Listed at 9 retailers as of November 5, 2026, with prices from £327 to £663, a £336 spread on the same certified stone. Frank Darling lists it at £663. 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

0.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle34.54°
Pavilion angle40.99°
OriginNatural
Grading LabGIA
CertificateGIA 6562430054
Dimensions6.53 × 4.54 × 2.77 mm
L/W Ratio1.44
Culet sizeNone
Top View
6.53 mm4.54 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6562430054
Side View
Table 59.0%Crown 34.54°Girdle: MED-THKPavilion 40.99°Culet: NoneDepth 61.0%

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 5
Current: £663 GBP|Low: £326 GBP|High: £668 GBP|Avg: £458 GBP|-0.7%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2£327 GBP
Retailer 8£341 GBP
Retailer 9£362 GBP
Retailer 4£401 GBP
Retailer 3£444 GBP
Retailer 6£478 GBP
Retailer 5£490 GBP
Retailer 7£520 GBP
Frank Darling£663 GBP

17 data points across 9 retailers

9 retailers£327 GBP to £663 GBP

A
Cheapest Retailer
-
£327 GBP
A
Retailer 2
-
£341 GBP
View
Retailer 3
-
£362 GBP
View
Price last confirmed 9 days ago
A
Retailer 4
-
£401 GBP
View
A
Retailer 5
-
£444 GBP
View
A
Retailer 6
-
£478 GBP
View
A
Retailer 7
-
£490 GBP
View
B+
Retailer 8
-
£520 GBP
View
Most Expensive
B
Frank Darling
2694476HK · Nov 6
£663 GBP
$888 USD
View
8 more retailers have this diamond
Prices start from £327 GBPSave up to £336 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
0.51ct Oval
£327 GBP