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Radiant|Natural|GIA

1.50ct J SI2 Radiant Natural Diamond

ID • J/SI2 • GIA 1545128714

Certificate GIA 1545128714

Diamond specifications and retailer prices

From $3,244 AUD
HK$17,800 HKD
As of November 1, 2026
Save $3,893 AUD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,920 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 1545128714. Listed at 17 retailers as of November 1, 2026, with a 120% 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 1545128714
Dimensions7.43 × 5.70 × 3.98 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
7.43 mm5.70 mm1.50 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1545128714
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: 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 1
Current: $3,492 AUD|Low: $3,225 AUD|High: $7,395 AUD|Avg: $4,457 AUD|-4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 6$3,244 AUD
Retailer 1$3,492 AUD
Retailer 3$3,887 AUD
Retailer 8$3,938 AUD
Retailer 11$4,470 AUD
Retailer 2$4,515 AUD
Retailer 5$4,525 AUD
Retailer 10$4,627 AUD
Retailer 9$4,924 AUD
Retailer 7$4,996 AUD
Retailer 4$7,136 AUD

34 data points across 11 retailers

17 retailers$3,244 AUD to $7,136 AUD

A
Cheapest Retailer
-
$3,244 AUD
HK$17,800 HKD
A
Retailer 2
-
$3,492 AUD
₹233,605 INR
View
A
Retailer 3
-
$3,887 AUD
SGD 3,690 SGD
View
A
Retailer 4
-
$3,938 AUD
$2,766 USD
View
Final sale: no returns
A
Retailer 5
-
$4,113 AUD
$2,889 USD
View
Retailer 6
-
$4,267 AUD
$2,997 USD
View
Price last confirmed 14 days ago
Retailer 7
-
$4,369 AUD
$3,069 USD
View
Price last confirmed 16 days ago
A
Retailer 8
-
$4,384 AUD
View
A
Retailer 9
-
$4,470 AUD
$3,140 USD
View
A
Retailer 10
-
$4,515 AUD
SGD 4,286 SGD
View
A
Retailer 11
-
$4,525 AUD
£2,503 GBP
View
Retailer 12
-
$4,537 AUD
$3,187 USD
View
Price last confirmed 16 days ago
A
Retailer 13
-
$4,627 AUD
$3,250 USD
View
Retailer 14
-
$4,924 AUD
$3,459 USD
View
Price last confirmed 13 days ago
A
Retailer 15
-
$4,996 AUD
€3,342 EUR
View
B
Retailer 16
-
$7,136 AUD
£3,947 GBP
View
Most Expensive
NZ Jewellers
4034e5c5-8dda-4627-8644-3682de31d601 · Oct 17
$8,920 AUD
$6,266 USD
View
Price last confirmed 15 days ago
16 more retailers have this diamond
Prices start from $3,244 AUDSave up to $3,893 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
$3,244 AUD