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Radiant|Natural|GIA

1.20ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1515243600

Certificate GIA 1515243600

Diamond specifications and retailer prices

From $3,230 AUD
As of November 5, 2026
Save $5,340 AUD (62%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,569 AUD at NZ Jewellers · As of November 3, 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 1515243600. Listed at 22 retailers as of November 3, 2026, with prices from $3,230 to $8,569, a $5,340 spread on the same certified stone. NZ Jewellers lists it at $8,569. 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 1515243600
Dimensions7.14 × 5.33 × 3.65 mm
L/W Ratio1.34
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Needle, Natural
Top View
7.14 mm5.33 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515243600
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.3%

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 5
Current: $3,704 AUD|Low: $3,230 AUD|High: $7,258 AUD|Avg: $4,433 AUD
Retailer 1
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
November 7, 2026
Retailer 11$3,230 AUD
Retailer 12$3,269 AUD
Retailer 6$3,355 AUD
Retailer 4$3,398 AUD
Retailer 13$3,448 AUD
Retailer 1$3,704 AUD
Retailer 14$3,841 AUD
Retailer 15$4,053 AUD
Retailer 2$4,085 AUD
Retailer 10$4,176 AUD
Retailer 3$4,513 AUD
Retailer 7$4,592 AUD
Retailer 8$4,611 AUD
Retailer 9$4,816 AUD
Retailer 5$7,179 AUD

33 data points across 15 retailers

22 retailers$3,230 AUD to $8,569 AUD

B+
Cheapest Retailer
-
$3,230 AUD
B+
Retailer 2
-
$3,269 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,355 AUD
View
B+
Retailer 4
-
$3,398 AUD
View
B+
Retailer 5
-
$3,426 AUD
View
B+
Retailer 6
-
$3,448 AUD
View
B
Retailer 7
-
$3,704 AUD
View
Retailer 8
-
$3,714 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$3,714 AUD
View
B+
Retailer 10
-
$3,841 AUD
View
B+
Retailer 11
-
$3,962 AUD
View
B+
Retailer 12
-
$4,053 AUD
View
B+
Retailer 13
-
$4,085 AUD
View
B
Retailer 14
-
$4,149 AUD
View
B+
Retailer 15
-
$4,176 AUD
View
B
Retailer 16
-
$4,366 AUD
View
B
Retailer 17
-
$4,513 AUD
View
Retailer 18
-
$4,592 AUD
View
Price last confirmed 31 days ago
B
Retailer 19
-
$4,611 AUD
View
B
Retailer 20
-
$4,816 AUD
View
B
Retailer 21
-
$7,179 AUD
View
Most Expensive
B
NZ Jewellers
76458eb6-69a0-4a20-85c4-dab2693a0be1 · Nov 3
$8,569 AUD
$5,888 USD
View
21 more retailers have this diamond
Prices start from $3,230 AUDSave up to $5,340 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
$3,230 AUD