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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 $3,337 AUD
As of November 7, 2026
Save $239 AUD (7%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,447 AUD 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: $7,447 AUD|Low: $2,535 AUD|High: $7,604 AUD|Avg: $3,815 AUD|-2.1%
NZ Jewellers
Retailer 2
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Retailer 27
October 22, 2026
Retailer 4$2,647 AUD
Retailer 25$2,799 AUD
Retailer 15$3,000 AUD
Retailer 5$3,014 AUD
Retailer 18$3,039 AUD
Retailer 22$3,195 AUD
Retailer 11$3,307 AUD
Retailer 20$3,337 AUD
Retailer 3$3,435 AUD
Retailer 9$3,519 AUD
Retailer 27$3,544 AUD
Retailer 10$3,563 AUD
Retailer 14$3,563 AUD
Retailer 26$3,730 AUD
Retailer 17$3,765 AUD
Retailer 19$3,806 AUD
Retailer 21$3,965 AUD
Retailer 2$3,981 AUD
Retailer 16$4,110 AUD
Retailer 6$4,117 AUD
Retailer 13$4,177 AUD
Retailer 23$4,177 AUD
Retailer 7$4,181 AUD
Retailer 24$4,323 AUD
Retailer 12$4,385 AUD
Retailer 8$6,299 AUD
NZ Jewellers$7,447 AUD

14 data points across 27 retailers

17 retailers$3,337 AUD to $3,576 AUD

Retailer 1
-
$3,000 AUD
Price last confirmed 31 days ago
Retailer 2
-
$3,195 AUD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
$3,337 AUD
View
Retailer 4
-
$3,435 AUD
View
Price last confirmed 30 days ago
Retailer 5
-
$3,563 AUD
View
Price last confirmed 30 days ago
Retailer 6
-
$3,563 AUD
View
Price last confirmed 31 days ago
B+
Retailer 7
-
$3,576 AUD
View
Retailer 8
-
$3,806 AUD
View
Price last confirmed 38 days ago
Retailer 9
-
$3,965 AUD
View
Price last confirmed 9 days ago
Retailer 10
-
$3,981 AUD
View
Price last confirmed 8 days ago
Retailer 11
-
$4,110 AUD
View
Price last confirmed 31 days ago
Retailer 12
-
$4,177 AUD
View
Price last confirmed 9 days ago
Retailer 13
-
$4,177 AUD
View
Price last confirmed 10 days ago
Retailer 14
-
$4,323 AUD
View
Price last confirmed 10 days ago
Retailer 15
-
$4,385 AUD
View
Price last confirmed 31 days ago
Retailer 16
-
$6,299 AUD
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
23bf7a64-de05-43a9-8c23-3c318a566c32 · Oct 6
$7,447 AUD
$5,117 USD
View
Price last confirmed 31 days ago
16 more retailers have this diamond
Prices start from $3,337 AUDSave up to $239 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