Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 3555645736

Certificate GIA 3555645736

Diamond specifications and retailer prices

From $4,136 NZD
As of November 7, 2026
18 retailers carry this diamond
Most expensive: $8,339 NZD 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: $8,141 NZD|Low: $3,063 NZD|High: $8,141 NZD|Avg: $4,391 NZD
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
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Retailer 18
Retailer 19
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Retailer 22
Retailer 23
Retailer 24
October 22, 2026
Retailer 24$3,160 NZD
Retailer 3$3,294 NZD
Retailer 20$3,355 NZD
Retailer 12$3,586 NZD
Retailer 9$3,610 NZD
Retailer 10$3,752 NZD
Retailer 7$3,848 NZD
Retailer 8$3,895 NZD
Retailer 11$3,895 NZD
Retailer 22$3,923 NZD
Retailer 23$4,095 NZD
Retailer 15$4,144 NZD
Retailer 21$4,162 NZD
Retailer 14$4,494 NZD
Retailer 4$4,564 NZD
Retailer 5$4,820 NZD
Retailer 17$4,878 NZD
Retailer 16$4,905 NZD
Retailer 2$4,934 NZD
Retailer 13$5,177 NZD
Retailer 18$5,177 NZD
Retailer 19$5,358 NZD
Retailer 6$6,885 NZD
NZ Jewellers$8,141 NZD

20 data points across 24 retailers

18 retailers

Retailer 1
-
$3,586 NZD
Price last confirmed 31 days ago
Retailer 2
-
$3,895 NZD
View
Price last confirmed 30 days ago
Retailer 3
-
$3,895 NZD
View
Price last confirmed 31 days ago
Retailer 4
-
$3,988 NZD
View
Price last confirmed 43 days ago
Retailer 5
-
$4,095 NZD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$4,136 NZD
View
Retailer 7
-
$4,172 NZD
View
Price last confirmed 38 days ago
Retailer 8
-
$4,494 NZD
View
Price last confirmed 31 days ago
Retailer 9
-
$4,602 NZD
View
Price last confirmed 46 days ago
Retailer 10
-
$4,878 NZD
View
Price last confirmed 34 days ago
Retailer 11
-
$4,905 NZD
View
Price last confirmed 32 days ago
Retailer 12
-
$4,934 NZD
View
Price last confirmed 8 days ago
Retailer 13
-
$5,177 NZD
View
Price last confirmed 9 days ago
Retailer 14
-
$5,177 NZD
View
Price last confirmed 10 days ago
Retailer 15
-
$5,358 NZD
View
Price last confirmed 10 days ago
Retailer 16
-
$6,885 NZD
View
Price last confirmed 30 days ago
Retailer 17
-
$8,141 NZD
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
22cc3872-e67f-46b2-a85a-2e58662edd0e · Sep 20
$8,339 NZD
$4,623 USD
View
Price last confirmed 47 days ago
17 more retailers have this diamond
Prices start from $4,136 NZD

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
$4,136 NZD