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Radiant|Natural|GIA

1.51ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 1242037201

Certificate GIA 1242037201

Diamond specifications and retailer prices

From $4,844 AUD
As of November 6, 2026
Save $6,679 AUD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $11,522 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two 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 1242037201. Listed at 7 retailers as of November 5, 2026, with prices from $4,844 to $11,522, a $6,679 spread on the same certified stone. NZ Jewellers lists it at $11,522. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle60.04°
OriginNatural
Grading LabGIA
CertificateGIA 1242037201
Dimensions7.91 × 5.61 × 3.92 mm
L/W Ratio1.41
Key to symbols
Crystal, Feather
Top View
7.91 mm5.61 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242037201
Side View
Table 64.0%CrownGirdle: MED-THKPavilion 60.04°Culet: NoneDepth 69.8%

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 6
Current: $11,522 AUD|Low: $4,844 AUD|High: $12,679 AUD|Avg: $8,076 AUD|-7.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$4,844 AUD
Retailer 2$6,168 AUD
Retailer 4$6,613 AUD
Retailer 6$6,613 AUD
Retailer 7$7,235 AUD
Retailer 3$10,505 AUD
NZ Jewellers$11,522 AUD

29 data points across 7 retailers

7 retailers$4,844 AUD to $11,522 AUD

A
Cheapest Retailer
-
$4,844 AUD
B+
Retailer 2
-
$6,168 AUD
View
B+
Retailer 3
-
$6,613 AUD
View
B+
Retailer 4
-
$6,613 AUD
View
B
Retailer 5
-
$7,235 AUD
View
B
Retailer 6
-
$10,505 AUD
View
Most Expensive
B
NZ Jewellers
b561fd30-666a-4a5e-9951-9cf2b429056d · Nov 5
$11,522 AUD
$7,917 USD
View
6 more retailers have this diamond
Prices start from $4,844 AUDSave up to $6,679 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
1.51ct Radiant
$4,844 AUD