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Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

ID • E/SI1 • GIA 07

Certificate GIA 07

Diamond specifications and retailer prices

From $4,777 SGD
As of November 6, 2026
Save $6,173 SGD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,950 SGD at NZ Jewellers · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 10 retailers as of November 5, 2026, with prices from $4,777 to $10,950, a $6,173 spread on the same certified stone. NZ Jewellers lists it at $10,950. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 07
Dimensions6.84 × 5.38 × 3.75 mm
L/W Ratio1.27
Top View
6.84 mm5.38 mm1.21 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 07
Side View
Table 69.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.7%

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 6
Current: $10,950 SGD|Low: $4,777 SGD|High: $10,950 SGD|Avg: $6,201 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5$4,777 SGD
Retailer 9$5,023 SGD
Retailer 2$5,639 SGD
Retailer 4$5,694 SGD
Retailer 6$5,694 SGD
Retailer 8$5,877 SGD
Retailer 7$5,933 SGD
Retailer 3$6,507 SGD
NZ Jewellers$10,950 SGD

6 data points across 9 retailers

10 retailers$4,777 SGD to $10,950 SGD

B+
Cheapest Retailer
-
$4,777 SGD
B+
Retailer 2
-
$5,023 SGD
View
B+
Retailer 3
-
$5,639 SGD
View
Retailer 4
-
$5,694 SGD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$5,694 SGD
View
B+
Retailer 6
-
$5,877 SGD
View
B+
Retailer 7
-
$5,933 SGD
View
B
Retailer 8
-
$6,507 SGD
View
Retailer 9
-
$6,569 SGD
View
Price last confirmed 53 days ago
Most Expensive
B
NZ Jewellers
194177cb-0a30-490e-840c-199ec22db9f4 · Nov 5
$10,950 SGD
$8,544 USD
View
9 more retailers have this diamond
Prices start from $4,777 SGDSave up to $6,173 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
$4,777 SGD