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Radiant|Natural|HRD

1.21ct F SI2 Radiant Natural Diamond

EX • F/SI2 • HRD 260000124352

Certificate HRD 260000124352

Diamond specifications and retailer prices

From £1,232 GBP
As of November 3, 2026
Save £1,772 GBP (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,004 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000124352. Listed at 5 retailers as of November 3, 2026, with prices from £1,232 to £3,004, a £1,772 spread on the same certified stone. NZ Jewellers lists it at £3,004. 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

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.75°
Pavilion angle30.94°
OriginNatural
Grading LabHRD
CertificateHRD 260000124352
Dimensions6.80 × 5.24 × 3.65 mm
L/W Ratio1.30
Girdle conditionMedium
Top View
6.80 mm5.24 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000124352
Side View
Table 64.0%Crown 44.75°GirdlePavilion 30.94°Culet: NoneDepth 69.6%

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 3
Current: £3,004 GBP|Low: £1,232 GBP|High: £3,050 GBP|Avg: £1,728 GBP|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3£1,232 GBP
Retailer 5£1,240 GBP
Retailer 6£1,261 GBP
Retailer 4£1,289 GBP
Retailer 2£2,157 GBP
NZ Jewellers£3,004 GBP

16 data points across 6 retailers

5 retailers£1,232 GBP to £3,004 GBP

A
Cheapest Retailer
-
£1,232 GBP
A
Retailer 2
-
£1,240 GBP
View
A
Retailer 3
-
£1,289 GBP
View
B+
Retailer 4
-
£2,157 GBP
View
Most Expensive
B
NZ Jewellers
5999e0ca-993a-4aca-bee3-8626bf162bc1 · Nov 3
£3,004 GBP
$4,021 USD
View
4 more retailers have this diamond
Prices start from £1,232 GBPSave up to £1,772 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
1.21ct Radiant
£1,232 GBP