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Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 1235223535

Certificate GIA 1235223535

Diamond specifications and retailer prices

From $5,191 AUD
As of November 6, 2026
Save $6,942 AUD (57%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $12,134 AUD at NZ Jewellers · As of November 5, 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 1235223535. Listed at 29 retailers as of November 5, 2026, with prices from $5,191 to $12,134, a $6,942 spread on the same certified stone. NZ Jewellers lists it at $12,134. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1235223535
Dimensions7.09 × 5.82 × 4.05 mm
L/W Ratio1.22
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
7.09 mm5.82 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1235223535
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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: $8,585 AUD|Low: $5,039 AUD|High: $11,224 AUD|Avg: $7,171 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
Retailer 16
Retailer 17
November 7, 2026
Retailer 5$5,421 AUD
Retailer 6$5,823 AUD
Retailer 8$6,309 AUD
Retailer 9$6,309 AUD
Retailer 14$6,412 AUD
Retailer 11$6,706 AUD
Retailer 17$6,810 AUD
Retailer 13$6,856 AUD
Retailer 7$7,019 AUD
Retailer 2$7,233 AUD
Retailer 3$7,233 AUD
Retailer 10$7,414 AUD
Retailer 4$7,481 AUD
Retailer 15$7,836 AUD
Retailer 16$8,497 AUD
Retailer 1$8,585 AUD
Retailer 12$11,032 AUD

43 data points across 17 retailers

29 retailers$5,191 AUD to $12,134 AUD

A
Cheapest Retailer
-
$5,191 AUD
A
Retailer 2
-
$5,421 AUD
View
B+
Retailer 3
-
$5,497 AUD
View
B+
Retailer 4
-
$5,552 AUD
View
B+
Retailer 5
-
$5,564 AUD
View
B+
Retailer 6
-
$5,762 AUD
View
B+
Retailer 7
-
$5,823 AUD
View
Final sale: no returns
B+
Retailer 8
-
$5,926 AUD
View
B+
Retailer 9
-
$5,989 AUD
View
Retailer 10
-
$6,309 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$6,309 AUD
View
B+
Retailer 12
-
$6,309 AUD
View
B+
Retailer 13
-
$6,412 AUD
View
Retailer 14
-
$6,706 AUD
View
B+
Retailer 15
-
$6,810 AUD
View
B+
Retailer 16
-
$6,856 AUD
View
Retailer 17
-
$7,019 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
$7,233 AUD
View
B
Retailer 19
-
$7,233 AUD
View
B
Retailer 20
-
$7,235 AUD
View
B
Retailer 21
-
$7,280 AUD
View
Retailer 22
-
$7,414 AUD
View
B
Retailer 23
-
$7,481 AUD
View
Retailer 24
-
$7,690 AUD
View
Price last confirmed 15 days ago
B+
Retailer 25
-
$7,836 AUD
View
B
Retailer 26
-
$8,497 AUD
View
Retailer 27
-
$8,585 AUD
View
B
Retailer 28
-
$11,032 AUD
View
Most Expensive
B
NZ Jewellers
5656a498-0476-440e-ad80-96e46112e2e9 · Nov 5
$12,134 AUD
$8,337 USD
View
28 more retailers have this diamond
Prices start from $5,191 AUDSave up to $6,942 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
$5,191 AUD