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Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2546118660

Certificate GIA 2546118660

Diamond specifications and retailer prices

From $4,526 AUD
As of November 6, 2026
Save $5,343 AUD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,403 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two 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 2546118660. Listed at 21 retailers as of November 6, 2026, with a 118% 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

1.50
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546118660
Dimensions7.50 × 5.78 × 3.93 mm
L/W Ratio1.30
Top View
7.50 mm5.78 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546118660
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.0%

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: $10,403 AUD|Low: $4,507 AUD|High: $10,403 AUD|Avg: $6,491 AUD
NZ Jewellers
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
Retailer 16
Retailer 17
November 7, 2026
Retailer 4$4,526 AUD
Retailer 13$4,769 AUD
Retailer 17$5,448 AUD
Retailer 6$5,475 AUD
Retailer 11$5,662 AUD
Retailer 14$5,704 AUD
Retailer 8$5,972 AUD
Retailer 12$6,009 AUD
Retailer 9$6,085 AUD
Retailer 5$6,148 AUD
Retailer 3$6,171 AUD
Retailer 2$6,308 AUD
Retailer 15$6,674 AUD
Retailer 7$6,890 AUD
Retailer 16$7,242 AUD
Retailer 10$9,869 AUD
NZ Jewellers$10,403 AUD

27 data points across 17 retailers

21 retailers$4,526 AUD to $9,869 AUD

A
Cheapest Retailer
-
$4,526 AUD
A
Retailer 2
-
$4,769 AUD
View
A
Retailer 3
-
$5,448 AUD
View
A
Retailer 4
-
$5,475 AUD
View
Final sale: no returns
B+
Retailer 5
-
$5,662 AUD
View
B+
Retailer 6
-
$5,683 AUD
View
B+
Retailer 7
-
$5,704 AUD
View
Retailer 8
-
$5,972 AUD
View
Price last confirmed 20 days ago
B+
Retailer 9
-
$5,995 AUD
View
B+
Retailer 10
-
$6,009 AUD
View
Retailer 11
-
$6,085 AUD
View
Price last confirmed 22 days ago
Retailer 12
-
$6,085 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$6,148 AUD
View
B+
Retailer 14
-
$6,171 AUD
View
Retailer 15
-
$6,308 AUD
View
Retailer 16
-
$6,565 AUD
View
Price last confirmed 34 days ago
B+
Retailer 17
-
$6,674 AUD
View
Retailer 18
-
$6,890 AUD
View
Price last confirmed 19 days ago
B+
Retailer 19
-
$7,242 AUD
View
B
Retailer 20
-
$9,869 AUD
View
Most Expensive
NZ Jewellers
0f92685b-5a49-416b-b35c-1f1e2a3ce145 · Oct 17
$10,403 AUD
$7,148 USD
View
Price last confirmed 20 days ago
20 more retailers have this diamond
Prices start from $4,526 AUDSave up to $5,343 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
1.50ct Radiant
$4,526 AUD