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Radiant|Natural|GIA

1.20ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 5242041299

Certificate GIA 5242041299

Diamond specifications and retailer prices

From $2,657 AUD
$1,862 USD
As of November 1, 2026
Save $3,903 AUD (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,559 AUD at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242041299. Listed at 7 retailers as of October 30, 2026, with prices from $2,657 to $6,559, a $3,903 spread on the same certified stone. NZ Jewellers lists it at $6,559. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle57.45°
OriginNatural
Grading LabGIA
CertificateGIA 5242041299
Dimensions6.99 × 5.28 × 3.68 mm
L/W Ratio1.32
Key to symbols
Crystal, Feather, Knot, Needle
Top View
6.99 mm5.28 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5242041299
Side View
Table 64.0%CrownGirdle: ThickPavilion 57.45°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $6,559 AUD|Low: $2,657 AUD|High: $6,958 AUD|Avg: $4,079 AUD|+8.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$2,657 AUD
Retailer 7$2,744 AUD
Retailer 6$2,814 AUD
Retailer 4$3,159 AUD
Retailer 5$4,120 AUD
Retailer 3$4,654 AUD
NZ Jewellers$6,559 AUD

29 data points across 7 retailers

7 retailers$2,657 AUD to $6,559 AUD

A
Cheapest Retailer
-
$2,657 AUD
$1,862 USD
A
Retailer 2
-
$2,744 AUD
SGD 2,599 SGD
View
A
Retailer 3
-
$2,814 AUD
$1,972 USD
View
B+
Retailer 4
-
$3,159 AUD
View
B
Retailer 5
-
$4,120 AUD
€2,750 EUR
View
B
Retailer 6
-
$4,654 AUD
£2,568 GBP
View
Most Expensive
B
NZ Jewellers
5f74f66d-002f-41ff-8926-7daef58a7c68 · Oct 30
$6,559 AUD
$4,597 USD
View
6 more retailers have this diamond
Prices start from $2,657 AUDSave up to $3,903 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.

A
1.20ct Radiant
$2,657 AUD