Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 3555645736

Certificate GIA 3555645736

Diamond specifications and retailer prices

From $2,939 SGD
As of November 7, 2026
18 retailers carry this diamond
Most expensive: $5,925 SGD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.2ct natural radiant diamond

This 1.2ct 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 3555645736. Listed at 18 retailers as of November 7, 2026. 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

1.20
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555645736
Dimensions7.33 × 5.23 × 3.50 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cloud, Needle, Natural
Top View
7.33 mm5.23 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555645736
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 7
Current: $5,784 SGD|Low: $2,176 SGD|High: $5,784 SGD|Avg: $3,119 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
Retailer 22
Retailer 23
Retailer 24
October 22, 2026
Retailer 24$2,245 SGD
Retailer 3$2,340 SGD
Retailer 20$2,384 SGD
Retailer 12$2,548 SGD
Retailer 9$2,564 SGD
Retailer 10$2,666 SGD
Retailer 7$2,734 SGD
Retailer 8$2,767 SGD
Retailer 11$2,767 SGD
Retailer 22$2,787 SGD
Retailer 23$2,909 SGD
Retailer 15$2,944 SGD
Retailer 21$2,957 SGD
Retailer 14$3,192 SGD
Retailer 4$3,242 SGD
Retailer 5$3,424 SGD
Retailer 17$3,465 SGD
Retailer 16$3,485 SGD
Retailer 2$3,505 SGD
Retailer 13$3,678 SGD
Retailer 18$3,678 SGD
Retailer 19$3,806 SGD
Retailer 6$4,892 SGD
NZ Jewellers$5,784 SGD

20 data points across 24 retailers

18 retailers

Retailer 1
-
$2,548 SGD
Price last confirmed 31 days ago
Retailer 2
-
$2,767 SGD
View
Price last confirmed 30 days ago
Retailer 3
-
$2,767 SGD
View
Price last confirmed 31 days ago
Retailer 4
-
$2,834 SGD
View
Price last confirmed 43 days ago
Retailer 5
-
$2,909 SGD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$2,939 SGD
View
Retailer 7
-
$2,964 SGD
View
Price last confirmed 38 days ago
Retailer 8
-
$3,192 SGD
View
Price last confirmed 31 days ago
Retailer 9
-
$3,269 SGD
View
Price last confirmed 46 days ago
Retailer 10
-
$3,465 SGD
View
Price last confirmed 34 days ago
Retailer 11
-
$3,485 SGD
View
Price last confirmed 32 days ago
Retailer 12
-
$3,505 SGD
View
Price last confirmed 8 days ago
Retailer 13
-
$3,678 SGD
View
Price last confirmed 9 days ago
Retailer 14
-
$3,678 SGD
View
Price last confirmed 10 days ago
Retailer 15
-
$3,806 SGD
View
Price last confirmed 10 days ago
Retailer 16
-
$4,892 SGD
View
Price last confirmed 30 days ago
Retailer 17
-
$5,784 SGD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
22cc3872-e67f-46b2-a85a-2e58662edd0e · Sep 20
$5,925 SGD
$4,623 USD
View
Price last confirmed 47 days ago
17 more retailers have this diamond
Prices start from $2,939 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+
1.20ct Radiant
$2,939 SGD