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Radiant|Natural|HRD

1.21ct D SI2 Radiant Natural Diamond

ID • D/SI2 • HRD 210000104145

Shape and cutting style on the report: Radiant

Certificate HRD 210000104145

Diamond specifications and retailer prices

From $6,385 AUD
As of November 4, 2026
Save $5,243 AUD (45%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $11,628 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded D 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 210000104145. Listed at 5 retailers as of November 4, 2026, with prices from $6,385 to $11,628, a $5,243 spread on the same certified stone. MOH London lists it at $11,628. 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 210000104145
Dimensions6.47 × 5.39 × 3.69 mm
L/W Ratio1.20
Girdle conditionPolished
Culet sizeNone
Top View
6.47 mm5.39 mm1.21 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 210000104145
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: 0.0Depth 69.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $11,628 AUD|Low: $6,231 AUD|High: $11,800 AUD|Avg: $7,926 AUD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$6,340 AUD
Retailer 5$6,385 AUD
Retailer 3$6,587 AUD
Retailer 4$7,321 AUD
Retailer 2$8,238 AUD
Retailer 7$8,962 AUD
MOH London$11,628 AUD

27 data points across 7 retailers

5 retailers$6,385 AUD to $11,628 AUD

B+
Cheapest Retailer
-
$6,385 AUD
B+
Retailer 2
-
$6,587 AUD
View
Retailer 3
-
$7,321 AUD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$8,238 AUD
View
Most Expensive
B
MOH London
1704B527F · Nov 4
$11,628 AUD
£6,291 GBP
View
4 more retailers have this diamond
Prices start from $6,385 AUDSave up to $5,243 AUD

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+
1.21ct Radiant
$6,385 AUD