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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6551308568

Certificate GIA 6551308568

Diamond specifications and retailer prices

From $2,939 SGD
As of November 7, 2026
Save $210 SGD (7%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $6,558 SGD 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 6551308568. Listed at 17 retailers as of November 5, 2026, with a relatively tight 7% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551308568
Dimensions7.27 × 5.19 × 3.51 mm
L/W Ratio1.40
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Indented Natural, Needle
Top View
7.27 mm5.19 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551308568
Side View
Table 57.0%CrownGirdle: VTN-XTKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

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

Price History

Last verified: Nov 7
Current: $6,558 SGD|Low: $2,233 SGD|High: $6,696 SGD|Avg: $3,360 SGD|-2.1%
NZ Jewellers
Retailer 2
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Retailer 26
Retailer 27
October 22, 2026
Retailer 4$2,331 SGD
Retailer 25$2,465 SGD
Retailer 15$2,641 SGD
Retailer 5$2,654 SGD
Retailer 18$2,676 SGD
Retailer 22$2,813 SGD
Retailer 11$2,912 SGD
Retailer 20$2,939 SGD
Retailer 3$3,025 SGD
Retailer 9$3,099 SGD
Retailer 27$3,121 SGD
Retailer 10$3,137 SGD
Retailer 14$3,137 SGD
Retailer 26$3,285 SGD
Retailer 17$3,315 SGD
Retailer 19$3,351 SGD
Retailer 21$3,491 SGD
Retailer 2$3,505 SGD
Retailer 16$3,619 SGD
Retailer 6$3,626 SGD
Retailer 13$3,678 SGD
Retailer 23$3,678 SGD
Retailer 7$3,682 SGD
Retailer 24$3,806 SGD
Retailer 12$3,861 SGD
Retailer 8$5,547 SGD
NZ Jewellers$6,558 SGD

14 data points across 27 retailers

17 retailers$2,939 SGD to $3,149 SGD

Retailer 1
-
$2,641 SGD
Price last confirmed 31 days ago
Retailer 2
-
$2,813 SGD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$2,939 SGD
View
Retailer 4
-
$3,025 SGD
View
Price last confirmed 30 days ago
Retailer 5
-
$3,137 SGD
View
Price last confirmed 30 days ago
Retailer 6
-
$3,137 SGD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$3,149 SGD
View
Retailer 8
-
$3,351 SGD
View
Price last confirmed 38 days ago
Retailer 9
-
$3,491 SGD
View
Price last confirmed 9 days ago
Retailer 10
-
$3,505 SGD
View
Price last confirmed 8 days ago
Retailer 11
-
$3,619 SGD
View
Price last confirmed 31 days ago
Retailer 12
-
$3,678 SGD
View
Price last confirmed 9 days ago
Retailer 13
-
$3,678 SGD
View
Price last confirmed 10 days ago
Retailer 14
-
$3,806 SGD
View
Price last confirmed 10 days ago
Retailer 15
-
$3,861 SGD
View
Price last confirmed 31 days ago
Retailer 16
-
$5,547 SGD
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
23bf7a64-de05-43a9-8c23-3c318a566c32 · Oct 6
$6,558 SGD
$5,117 USD
View
Price last confirmed 31 days ago
16 more retailers have this diamond
Prices start from $2,939 SGDSave up to $210 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