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Radiant|Natural|GIA

1.50ct J SI2 Radiant Natural Diamond

ID • J/SI2 • GIA 7551251473

Certificate GIA 7551251473

Diamond specifications and retailer prices

From $3,353 AUD
HK$18,400 HKD
As of November 1, 2026
Save $4,087 AUD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,752 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551251473. Listed at 17 retailers as of November 1, 2026, with a 122% 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551251473
Dimensions7.39 × 5.83 × 4.14 mm
L/W Ratio1.27
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.39 mm5.83 mm1.50 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551251473
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.1%

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 1
Current: $3,598 AUD|Low: $3,316 AUD|High: $7,742 AUD|Avg: $4,618 AUD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$3,353 AUD
Retailer 1$3,598 AUD
Retailer 2$4,008 AUD
Retailer 7$4,106 AUD
Retailer 4$4,610 AUD
Retailer 9$4,653 AUD
Retailer 10$4,662 AUD
Retailer 8$4,798 AUD
Retailer 6$5,208 AUD
Retailer 3$7,440 AUD

34 data points across 10 retailers

17 retailers$3,353 AUD to $7,440 AUD

A
Cheapest Retailer
-
$3,353 AUD
HK$18,400 HKD
A
Retailer 2
-
$3,598 AUD
₹240,727 INR
View
A
Retailer 3
-
$4,008 AUD
SGD 3,805 SGD
View
A
Retailer 4
-
$4,106 AUD
$2,884 USD
View
Final sale: no returns
A
Retailer 5
-
$4,242 AUD
$2,980 USD
View
Retailer 6
-
$4,449 AUD
$3,125 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
$4,514 AUD
View
Retailer 8
-
$4,553 AUD
$3,198 USD
View
Price last confirmed 17 days ago
A
Retailer 9
-
$4,610 AUD
£2,550 GBP
View
A
Retailer 10
-
$4,653 AUD
$3,268 USD
View
A
Retailer 11
-
$4,662 AUD
SGD 4,425 SGD
View
Retailer 12
-
$4,728 AUD
$3,321 USD
View
Price last confirmed 16 days ago
A
Retailer 13
-
$4,798 AUD
$3,370 USD
View
Retailer 14
-
$5,134 AUD
$3,606 USD
View
Price last confirmed 14 days ago
A
Retailer 15
-
$5,208 AUD
€3,484 EUR
View
B
Retailer 16
-
$7,440 AUD
£4,115 GBP
View
Most Expensive
NZ Jewellers
658d74bd-d713-4b2e-b756-d3b357c6c59c · Oct 17
$7,752 AUD
$5,445 USD
View
Price last confirmed 15 days ago
16 more retailers have this diamond
Prices start from $3,353 AUDSave up to $4,087 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
$3,353 AUD