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Oval|Natural|GIA

0.51ct G SI1 Oval Natural Diamond

EX • G/SI1 • GIA 6565462888

Certificate GIA 6565462888

Diamond specifications and retailer prices

From £416 GBP
$558 USD
As of November 2, 2026
Save £1,031 GBP (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,448 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 6565462888. Listed at 15 retailers as of October 30, 2026, with prices from £416 to £1,448, a £1,031 spread on the same certified stone. NZ Jewellers lists it at £1,448. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565462888
Dimensions6.18 × 4.63 × 2.79 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather
Top View
6.18 mm4.63 mm0.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565462888
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.2%

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 2
Current: £1,448 GBP|Low: £407 GBP|High: £1,540 GBP|Avg: £651 GBP|-6.0%
NZ Jewellers
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
Retailer 15
November 2, 2026
Retailer 8£416 GBP
Retailer 11£432 GBP
Retailer 10£452 GBP
Retailer 6£481 GBP
Retailer 3£497 GBP
Retailer 5£497 GBP
Retailer 4£500 GBP
Retailer 13£533 GBP
Retailer 9£555 GBP
Retailer 2£556 GBP
Retailer 14£581 GBP
Retailer 15£605 GBP
Retailer 7£739 GBP
Retailer 12£1,072 GBP
NZ Jewellers£1,448 GBP

31 data points across 15 retailers

15 retailers£416 GBP to £1,448 GBP

A
Cheapest Retailer
-
£416 GBP
$558 USD
Final sale: no returns
A
Retailer 2
-
£432 GBP
$579 USD
View
A
Retailer 3
-
£452 GBP
$606 USD
View
Retailer 4
-
£481 GBP
$645 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£497 GBP
$666 USD
View
A
Retailer 6
-
£497 GBP
$666 USD
View
A
Retailer 7
-
£500 GBP
SGD 905 SGD
View
A
Retailer 8
-
£533 GBP
$714 USD
View
B+
Retailer 9
-
£555 GBP
View
B+
Retailer 10
-
£556 GBP
View
B+
Retailer 11
-
£581 GBP
$779 USD
View
B+
Retailer 12
-
£605 GBP
$810 USD
View
Retailer 13
-
£739 GBP
A$1,522 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
£1,072 GBP
View
Most Expensive
B
NZ Jewellers
c50136d1-cc98-4d49-9767-77b458787b40 · Oct 30
£1,448 GBP
$1,940 USD
View
14 more retailers have this diamond
Prices start from £416 GBPSave up to £1,031 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
£416 GBP