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Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 5241113102

Certificate GIA 5241113102

Diamond specifications and retailer prices

From $3,578 SGD
As of November 6, 2026
Save $4,106 SGD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,684 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241113102. Listed at 21 retailers as of November 5, 2026, with prices from $3,578 to $7,684, a $4,106 spread on the same certified stone. NZ Jewellers lists it at $7,684. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241113102
Dimensions7.40 × 5.19 × 3.64 mm
L/W Ratio1.43
Culet sizeNone
Top View
7.40 mm5.19 mm1.21 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241113102
Side View
Table 69.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 70.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $7,684 SGD|Low: $3,578 SGD|High: $7,684 SGD|Avg: $4,685 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 7, 2026
Retailer 12$3,578 SGD
Retailer 10$3,663 SGD
Retailer 11$3,753 SGD
Retailer 7$3,883 SGD
Retailer 5$3,996 SGD
Retailer 9$3,996 SGD
Retailer 8$4,023 SGD
Retailer 6$4,150 SGD
Retailer 4$4,183 SGD
Retailer 15$4,278 SGD
Retailer 3$4,373 SGD
Retailer 16$4,397 SGD
Retailer 2$4,564 SGD
Retailer 20$4,610 SGD
Retailer 21$4,648 SGD
Retailer 17$5,133 SGD
Retailer 18$5,383 SGD
Retailer 13$5,578 SGD
Retailer 14$6,430 SGD
Retailer 19$7,356 SGD
NZ Jewellers$7,684 SGD

16 data points across 21 retailers

21 retailers$3,578 SGD to $7,684 SGD

B+
Cheapest Retailer
-
$3,578 SGD
B+
Retailer 2
-
$3,663 SGD
View
B
Retailer 3
-
$3,753 SGD
View
B
Retailer 4
-
$3,883 SGD
View
B
Retailer 5
-
$3,996 SGD
View
Retailer 6
-
$3,996 SGD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$4,023 SGD
View
B
Retailer 8
-
$4,150 SGD
View
B
Retailer 9
-
$4,183 SGD
View
B
Retailer 10
-
$4,278 SGD
View
B
Retailer 11
-
$4,373 SGD
View
B
Retailer 12
-
$4,397 SGD
View
B
Retailer 13
-
$4,564 SGD
View
B
Retailer 14
-
$4,610 SGD
View
B
Retailer 15
-
$4,648 SGD
View
B
Retailer 16
-
$5,133 SGD
View
B
Retailer 17
-
$5,383 SGD
View
B
Retailer 18
-
$5,578 SGD
View
B
Retailer 19
-
$6,430 SGD
View
B
Retailer 20
-
$7,356 SGD
View
Most Expensive
B
NZ Jewellers
b2e4fea6-1d79-4214-8cff-e134bc66ec8b · Nov 5
$7,684 SGD
$5,996 USD
View
20 more retailers have this diamond
Prices start from $3,578 SGDSave up to $4,106 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
$3,578 SGD