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Radiant|Natural|GIA

1.51ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 2547413242

Certificate GIA 2547413242

Diamond specifications and retailer prices

From £1,597 GBP
As of November 6, 2026
Save £2,066 GBP (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,382 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547413242. Listed at 15 retailers as of November 4, 2026, with a 129% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2547413242
Dimensions7.49 × 5.78 × 3.96 mm
L/W Ratio1.30
Top View
7.49 mm5.78 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2547413242
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,218 GBP|Low: £1,578 GBP|High: £3,743 GBP|Avg: £2,246 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7£1,597 GBP
Retailer 2£1,697 GBP
Retailer 5£1,872 GBP
Retailer 3£2,216 GBP
Retailer 1£2,218 GBP
Retailer 8£2,279 GBP
Retailer 4£2,439 GBP
Retailer 6£3,662 GBP

41 data points across 8 retailers

15 retailers£1,597 GBP to £3,662 GBP

A
Cheapest Retailer
-
£1,597 GBP
A
Retailer 2
-
£1,697 GBP
View
A
Retailer 3
-
£1,872 GBP
View
B+
Retailer 4
-
£1,987 GBP
View
Retailer 5
-
£2,096 GBP
View
Price last confirmed 22 days ago
Retailer 6
-
£2,096 GBP
View
Price last confirmed 20 days ago
B+
Retailer 7
-
£2,116 GBP
View
Retailer 8
-
£2,176 GBP
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£2,216 GBP
View
B+
Retailer 10
-
£2,218 GBP
View
B+
Retailer 11
-
£2,279 GBP
View
Retailer 12
-
£2,418 GBP
View
Price last confirmed 19 days ago
A
Retailer 13
-
£2,439 GBP
View
B
Retailer 14
-
£3,662 GBP
View
Most Expensive
NZ Jewellers
d2ac8816-3f34-491a-b66a-599bd9eac8b2 · Oct 18
£4,382 GBP
$5,865 USD
View
Price last confirmed 20 days ago
14 more retailers have this diamond
Prices start from £1,597 GBPSave up to £2,066 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
1.51ct Radiant
£1,597 GBP