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Radiant|Natural|IGI

0.51ct G IF Radiant Natural Diamond

EX • G/IF • IGI 815625591

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 815625591

Diamond specifications and retailer prices

From £362 GBP
As of November 6, 2026
Save £1,202 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,564 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 815625591. Listed at 10 retailers as of November 5, 2026, with prices from £362 to £1,564, a £1,202 spread on the same certified stone. NZ Jewellers lists it at £1,564. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle37.6°
OriginNatural
Grading LabIGI
CertificateIGI 815625591
Dimensions5.61 × 3.95 × 2.65 mm
L/W Ratio1.42
Top View
5.61 mm3.95 mm0.51 ctG / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 815625591
Side View
Table 64.0%Crown 47.1°Girdle: Slightly ThickPavilion 37.6°Culet: NoneDepth 67.1%

Caratlytics Score

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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: £1,564 GBP|Low: £362 GBP|High: £1,629 GBP|Avg: £710 GBP|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 4£362 GBP
Retailer 8£477 GBP
Retailer 9£498 GBP
Retailer 3£510 GBP
Retailer 5£551 GBP
Retailer 10£579 GBP
Retailer 2£631 GBP
Retailer 6£656 GBP
Retailer 7£1,150 GBP
NZ Jewellers£1,564 GBP

25 data points across 10 retailers

10 retailers£362 GBP to £1,564 GBP

A
Cheapest Retailer
-
£362 GBP
Retailer 2
-
£477 GBP
View
Price last confirmed 4 days ago
A
Retailer 3
-
£498 GBP
View
A
Retailer 4
-
£510 GBP
View
A
Retailer 5
-
£551 GBP
View
A
Retailer 6
-
£579 GBP
View
A
Retailer 7
-
£631 GBP
View
A
Retailer 8
-
£656 GBP
View
B
Retailer 9
-
£1,150 GBP
View
Most Expensive
B
NZ Jewellers
5bf6edc4-74f0-4cb3-8d27-e8d8bb1b0a11 · Nov 5
£1,564 GBP
$2,093 USD
View
9 more retailers have this diamond
Prices start from £362 GBPSave up to £1,202 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 Radiant
£362 GBP