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Radiant|Natural|GIA

1.20ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 5241013436

Certificate GIA 5241013436

Diamond specifications and retailer prices

From $3,362 AUD
As of November 5, 2026
Save $3,813 AUD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,587 AUD at NZ Jewellers · As of September 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 I 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 5241013436. Listed at 15 retailers as of November 4, 2026, with a 113% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241013436
Dimensions7.20 × 5.29 × 3.58 mm
L/W Ratio1.36
Culet sizeNone
Top View
7.20 mm5.29 mm1.20 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241013436
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $4,347 AUD|Low: $3,362 AUD|High: $7,281 AUD|Avg: $4,875 AUD|+3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$3,362 AUD
Retailer 6$3,372 AUD
Retailer 2$3,999 AUD
Retailer 1$4,347 AUD
Retailer 3$4,734 AUD
Retailer 5$7,175 AUD

43 data points across 6 retailers

15 retailers$3,362 AUD to $7,175 AUD

A
Cheapest Retailer
-
$3,362 AUD
A
Retailer 2
-
$3,372 AUD
View
Retailer 3
-
$3,720 AUD
View
Price last confirmed 37 days ago
B+
Retailer 4
-
$3,780 AUD
View
B+
Retailer 5
-
$3,799 AUD
View
Retailer 6
-
$3,892 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$3,999 AUD
View
B+
Retailer 8
-
$4,264 AUD
View
B+
Retailer 9
-
$4,264 AUD
View
Retailer 10
-
$4,293 AUD
View
Price last confirmed 39 days ago
B+
Retailer 11
-
$4,347 AUD
View
B+
Retailer 12
-
$4,410 AUD
View
B+
Retailer 13
-
$4,734 AUD
View
B
Retailer 14
-
$7,175 AUD
View
Most Expensive
NZ Jewellers
9f9d85bd-25b7-4b9f-9b5c-888df0e7c368 · Sep 30
$8,587 AUD
$5,900 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $3,362 AUDSave up to $3,813 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
$3,362 AUD