Radiant|Natural|HRD

1.21ct F SI2 Radiant Natural Diamond

EX • F/SI2 • HRD 260000124352

Certificate HRD 260000124352

Diamond specifications and retailer prices

From $1,649 USD
As of November 3, 2026
Save $2,372 USD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,021 USD 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 $1,649 to $4,021, a $2,372 spread on the same certified stone. NZ Jewellers lists it at $4,021. 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
Color
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: $4,021 USD|Low: $1,649 USD|High: $4,082 USD|Avg: $2,313 USD|-1.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$1,649 USD
Retailer 5$1,660 USD
Retailer 6$1,688 USD
Retailer 4$1,725 USD
Retailer 2$2,887 USD
NZ Jewellers$4,021 USD

16 data points across 6 retailers

5 retailers$1,649 USD to $4,021 USD

A
Cheapest Retailer
-
$1,649 USD
A
Retailer 2
-
$1,660 USD
View
A
Retailer 3
-
$1,725 USD
View
B+
Retailer 4
-
$2,887 USD
View
Most Expensive
B
NZ Jewellers
5999e0ca-993a-4aca-bee3-8626bf162bc1 · Nov 3
$4,021 USD
View
4 more retailers have this diamond
Prices start from $1,649 USDSave up to $2,372 USD

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
$1,649 USD