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Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

ID • G/SI1 • GIA 6561755542

Certificate GIA 6561755542

Diamond specifications and retailer prices

From £332 GBP
As of November 2, 2026
Save £1,010 GBP (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,343 GBP at NZ Jewellers · As of November 3, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561755542. Listed at 17 retailers as of November 2, 2026, with prices from £332 to £1,343, a £1,010 spread on the same certified stone. NZ Jewellers lists it at £1,343. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.5°
Pavilion angle55.6°
OriginNatural
Grading LabGIA
CertificateGIA 6561755542
Dimensions5.44 × 4.04 × 2.72 mm
L/W Ratio1.35
Girdle conditionPolished
Culet sizeNone
Top View
5.44 mm4.04 mm0.51 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6561755542
Side View
Table 69.0%Crown 43.5°Girdle: MED-STKPavilion 55.6°Culet: NoneDepth 67.5%

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 2
Current: £1,343 GBP|Low: £332 GBP|High: £1,343 GBP|Avg: £516 GBP
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
Retailer 16
Retailer 17
November 3, 2026
Retailer 14£332 GBP
Retailer 7£373 GBP
Retailer 4£381 GBP
Retailer 5£381 GBP
Retailer 17£395 GBP
Retailer 9£428 GBP
Retailer 12£461 GBP
Retailer 13£494 GBP
Retailer 10£520 GBP
Retailer 3£527 GBP
Retailer 16£536 GBP
Retailer 6£571 GBP
Retailer 2£572 GBP
Retailer 8£594 GBP
Retailer 15£602 GBP
Retailer 11£988 GBP
NZ Jewellers£1,343 GBP

4 data points across 17 retailers

17 retailers£332 GBP to £1,343 GBP

A
Cheapest Retailer
-
£332 GBP
A
Retailer 2
-
£373 GBP
View
A
Retailer 3
-
£381 GBP
View
A
Retailer 4
-
£381 GBP
View
A
Retailer 5
-
£428 GBP
View
A
Retailer 6
-
£434 GBP
View
A
Retailer 7
-
£461 GBP
View
A
Retailer 8
-
£494 GBP
View
A
Retailer 9
-
£520 GBP
View
B+
Retailer 10
-
£527 GBP
View
B+
Retailer 11
-
£536 GBP
View
B+
Retailer 12
-
£571 GBP
View
B+
Retailer 13
-
£572 GBP
View
B+
Retailer 14
-
£594 GBP
View
B+
Retailer 15
-
£602 GBP
View
B
Retailer 16
-
£988 GBP
View
Most Expensive
B
NZ Jewellers
64aecc6f-0a86-4525-a7a4-c4e7ffb59046 · Nov 3
£1,343 GBP
$1,797 USD
View
16 more retailers have this diamond
Prices start from £332 GBPSave up to £1,010 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
£332 GBP