Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2556546012

Certificate GIA 2556546012

Diamond specifications and retailer prices

From $2,111 USD
A$3,248 AUD
As of November 2, 2026
15 retailers carry this diamond
Most expensive: $4,752 USD at NZ Jewellers · As of October 6, 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 2556546012. Listed at 15 retailers as of November 2, 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
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2556546012
Dimensions7.34 × 5.18 × 3.55 mm
L/W Ratio1.42
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.34 mm5.18 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2556546012
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $4,752 USD|Low: $1,542 USD|High: $4,919 USD|Avg: $2,424 USD|-3.4%
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
October 17, 2026
Retailer 17$1,627 USD
Retailer 18$1,648 USD
Retailer 2$1,740 USD
Retailer 5$1,803 USD
Retailer 7$1,843 USD
Retailer 3$1,925 USD
Retailer 4$1,948 USD
Retailer 6$1,948 USD
Retailer 15$1,990 USD
Retailer 13$2,081 USD
Retailer 16$2,100 USD
Retailer 12$2,110 USD
Retailer 9$2,240 USD
Retailer 8$2,248 USD
Retailer 20$2,252 USD
Retailer 19$2,313 USD
Retailer 11$2,466 USD
Retailer 10$2,487 USD
Retailer 21$2,638 USD
Retailer 14$3,575 USD
NZ Jewellers$4,752 USD

23 data points across 21 retailers

15 retailers

Retailer 1
-
$1,740 USD
Price last confirmed 14 days ago
Retailer 2
-
$1,803 USD
View
Price last confirmed 25 days ago
Retailer 3
-
$1,843 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$1,948 USD
View
Price last confirmed 26 days ago
Retailer 5
-
$1,948 USD
View
Price last confirmed 25 days ago
Retailer 6
-
$2,100 USD
View
Price last confirmed 25 days ago
Retailer 7
-
$2,110 USD
View
Price last confirmed 32 days ago
B+
Retailer 8
-
$2,111 USD
A$3,248 AUD
View
Retailer 9
-
$2,240 USD
View
Price last confirmed 26 days ago
Retailer 10
-
$2,248 USD
View
Price last confirmed 26 days ago
Retailer 11
-
$2,313 USD
View
Price last confirmed 25 days ago
Retailer 12
-
$2,466 USD
ZAR 39,843 ZAR
View
Price last confirmed 29 days ago
Retailer 13
-
$2,487 USD
A$3,826 AUD
View
Price last confirmed 27 days ago
Retailer 14
-
$3,575 USD
£2,815 GBP
View
Price last confirmed 28 days ago
Most Expensive
NZ Jewellers
c67dec7c-1541-4e4e-8ebb-239df99defd2 · Oct 6
$4,752 USD
View
Price last confirmed 27 days ago
14 more retailers have this diamond
Prices start from $2,111 USD

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
$2,111 USD