Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 3555645736

Certificate GIA 3555645736

Diamond specifications and retailer prices

From $3,337 AUD
As of November 7, 2026
18 retailers carry this diamond
Most expensive: $6,728 AUD 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $6,568 AUD|Low: $2,471 AUD|High: $6,568 AUD|Avg: $3,542 AUD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 22
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Retailer 24
October 22, 2026
Retailer 24$2,550 AUD
Retailer 3$2,658 AUD
Retailer 20$2,707 AUD
Retailer 12$2,893 AUD
Retailer 9$2,912 AUD
Retailer 10$3,027 AUD
Retailer 7$3,104 AUD
Retailer 8$3,142 AUD
Retailer 11$3,142 AUD
Retailer 22$3,165 AUD
Retailer 23$3,304 AUD
Retailer 15$3,343 AUD
Retailer 21$3,358 AUD
Retailer 14$3,625 AUD
Retailer 4$3,682 AUD
Retailer 5$3,889 AUD
Retailer 17$3,935 AUD
Retailer 16$3,957 AUD
Retailer 2$3,981 AUD
Retailer 13$4,177 AUD
Retailer 18$4,177 AUD
Retailer 19$4,323 AUD
Retailer 6$5,555 AUD
NZ Jewellers$6,568 AUD

20 data points across 24 retailers

18 retailers

Retailer 1
-
$2,893 AUD
Price last confirmed 31 days ago
Retailer 2
-
$3,142 AUD
View
Price last confirmed 30 days ago
Retailer 3
-
$3,142 AUD
View
Price last confirmed 31 days ago
Retailer 4
-
$3,218 AUD
View
Price last confirmed 43 days ago
Retailer 5
-
$3,304 AUD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$3,337 AUD
View
Retailer 7
-
$3,366 AUD
View
Price last confirmed 38 days ago
Retailer 8
-
$3,625 AUD
View
Price last confirmed 31 days ago
Retailer 9
-
$3,713 AUD
View
Price last confirmed 46 days ago
Retailer 10
-
$3,935 AUD
View
Price last confirmed 34 days ago
Retailer 11
-
$3,957 AUD
View
Price last confirmed 32 days ago
Retailer 12
-
$3,981 AUD
View
Price last confirmed 8 days ago
Retailer 13
-
$4,177 AUD
View
Price last confirmed 9 days ago
Retailer 14
-
$4,177 AUD
View
Price last confirmed 10 days ago
Retailer 15
-
$4,323 AUD
View
Price last confirmed 10 days ago
Retailer 16
-
$5,555 AUD
View
Price last confirmed 30 days ago
Retailer 17
-
$6,568 AUD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
22cc3872-e67f-46b2-a85a-2e58662edd0e · Sep 20
$6,728 AUD
$4,623 USD
View
Price last confirmed 47 days ago
17 more retailers have this diamond
Prices start from $3,337 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+
1.20ct Radiant
$3,337 AUD