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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 $5,622 SGD
As of November 4, 2026
Save $4,617 SGD (45%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $10,239 SGD 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 $5,622 to $10,239, a $4,617 spread on the same certified stone. MOH London lists it at $10,239. 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: $10,239 SGD|Low: $5,487 SGD|High: $10,391 SGD|Avg: $6,979 SGD|+1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$5,583 SGD
Retailer 5$5,622 SGD
Retailer 3$5,801 SGD
Retailer 4$6,446 SGD
Retailer 2$7,254 SGD
Retailer 7$7,892 SGD
MOH London$10,239 SGD

27 data points across 7 retailers

5 retailers$5,622 SGD to $10,239 SGD

B+
Cheapest Retailer
-
$5,622 SGD
B+
Retailer 2
-
$5,801 SGD
View
Retailer 3
-
$6,446 SGD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$7,254 SGD
View
Most Expensive
B
MOH London
1704B527F · Nov 4
$10,239 SGD
£6,291 GBP
View
4 more retailers have this diamond
Prices start from $5,622 SGDSave up to $4,617 SGD

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
$5,622 SGD