Radiant|Natural|GIA

2.51ct G SI2 Radiant Natural Diamond

ID • G/SI2

Diamond specifications and retailer prices

From £16,642 GBP
CA$31,017 CAD
As of October 30, 2026
4 retailers carry this diamond
Most expensive: £21,618 GBP at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 4 retailers as of October 30, 2026. 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

2.51
Carat
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions8.76 × 6.48 × 4.52 mm
L/W Ratio1.35
Top View
8.76 mm6.48 mm2.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 69.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £21,618 GBP|Low: £14,912 GBP|High: £21,618 GBP|Avg: £18,320 GBP
NZ Jewellers
Retailer 2
Retailer 3
October 10, 2026
Retailer 2£14,912 GBP
Retailer 3£16,642 GBP
NZ Jewellers£21,618 GBP

6 data points across 3 retailers

4 retailers

Retailer 1
-
£14,912 GBP
$20,011 USD
Price last confirmed 11 days ago
B+
Retailer 2
-
£16,642 GBP
CA$31,017 CAD
View
Retailer 3
-
£21,618 GBP
$29,010 USD
View
Price last confirmed 37 days ago
Most Expensive
NZ Jewellers
d2b43c4f-c12b-4003-81c3-85d64a7a1dcb · Sep 29
£21,618 GBP
$29,010 USD
View
Price last confirmed 34 days ago
3 more retailers have this diamond
Prices start from £16,642 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.

B+
2.51ct Radiant
£16,642 GBP