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Radiant|Natural|GIA

1.20ct J SI2 Radiant Natural Diamond

VG • J/SI2 • GIA 1558394082

Certificate GIA 1558394082

Diamond specifications and retailer prices

From $2,758 AUD
$1,933 USD
As of November 1, 2026
Save $3,624 AUD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,383 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1558394082. Listed at 12 retailers as of October 30, 2026, with prices from $2,758 to $6,383, a $3,624 spread on the same certified stone. NZ Jewellers lists it at $6,383. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558394082
Dimensions6.85 × 5.22 × 3.63 mm
L/W Ratio1.31
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
6.85 mm5.22 mm1.20 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558394082
Side View
Table 66.0%CrownGirdlePavilionCulet: NoneDepth 69.5%

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 1
Current: $6,383 AUD|Low: $2,635 AUD|High: $6,647 AUD|Avg: $3,720 AUD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10$2,758 AUD
Retailer 11$2,817 AUD
Retailer 12$3,005 AUD
Retailer 4$3,015 AUD
Retailer 7$3,054 AUD
Retailer 9$3,054 AUD
Retailer 3$3,193 AUD
Retailer 5$3,350 AUD
Retailer 8$3,523 AUD
Retailer 2$4,168 AUD
Retailer 6$5,357 AUD
NZ Jewellers$6,383 AUD

42 data points across 12 retailers

12 retailers$2,758 AUD to $6,383 AUD

B+
Cheapest Retailer
-
$2,758 AUD
$1,933 USD
B+
Retailer 2
-
$2,817 AUD
$1,974 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,005 AUD
$2,106 USD
View
B+
Retailer 4
-
$3,015 AUD
$2,113 USD
View
B+
Retailer 5
-
$3,054 AUD
$2,140 USD
View
B+
Retailer 6
-
$3,054 AUD
$2,140 USD
View
B+
Retailer 7
-
$3,193 AUD
$2,238 USD
View
B
Retailer 8
-
$3,350 AUD
£1,848 GBP
View
B
Retailer 9
-
$3,523 AUD
$2,469 USD
View
B
Retailer 10
-
$4,168 AUD
€2,782 EUR
View
B
Retailer 11
-
$5,357 AUD
£2,956 GBP
View
Most Expensive
C
NZ Jewellers
7b1abb6f-6574-47ae-b48d-66644d2c540c · Oct 30
$6,383 AUD
$4,473 USD
View
11 more retailers have this diamond
Prices start from $2,758 AUDSave up to $3,624 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
$2,758 AUD