Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

GD • J/SI1 • GIA 1408479256

Certificate GIA 1408479256

Diamond specifications and retailer prices

From $3,413 AUD
As of November 4, 2026
Save $3,787 AUD (53%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,028 AUD at NZ Jewellers · As of September 30, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1408479256. Listed at 25 retailers as of November 4, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1408479256
Dimensions7.13 × 5.42 × 3.91 mm
L/W Ratio1.32
Culet sizeNone
Top View
7.13 mm5.42 mm1.50 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1408479256
Side View
Table 58.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 72.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,129 AUD|Low: $3,413 AUD|High: $7,308 AUD|Avg: $4,786 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 9$3,413 AUD
Retailer 10$3,611 AUD
Retailer 5$4,093 AUD
Retailer 1$4,129 AUD
Retailer 3$4,177 AUD
Retailer 4$4,571 AUD
Retailer 2$4,855 AUD
Retailer 6$4,977 AUD
Retailer 7$5,270 AUD
Retailer 8$7,200 AUD

37 data points across 10 retailers

25 retailers$3,413 AUD to $7,200 AUD

B+
Cheapest Retailer
-
$3,413 AUD
B+
Retailer 2
-
$3,503 AUD
View
B+
Retailer 3
-
$3,611 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,653 AUD
View
B+
Retailer 5
-
$3,857 AUD
View
Retailer 6
-
$3,912 AUD
View
Price last confirmed 37 days ago
B+
Retailer 7
-
$3,965 AUD
View
B+
Retailer 8
-
$3,973 AUD
View
Retailer 9
-
$4,062 AUD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$4,093 AUD
View
Retailer 11
-
$4,129 AUD
View
Retailer 12
-
$4,177 AUD
View
B+
Retailer 13
-
$4,210 AUD
View
B+
Retailer 14
-
$4,468 AUD
View
B+
Retailer 15
-
$4,468 AUD
View
Retailer 16
-
$4,513 AUD
View
Price last confirmed 67 days ago
Retailer 17
-
$4,513 AUD
View
Price last confirmed 39 days ago
B+
Retailer 18
-
$4,571 AUD
View
B+
Retailer 19
-
$4,614 AUD
View
Retailer 20
-
$4,855 AUD
View
Price last confirmed 34 days ago
B+
Retailer 21
-
$4,977 AUD
View
Retailer 22
-
$5,012 AUD
View
Price last confirmed 15 days ago
B+
Retailer 23
-
$5,270 AUD
View
B
Retailer 24
-
$7,200 AUD
View
Most Expensive
NZ Jewellers
5e19215d-1df8-4705-b2d1-ae11bffc1d6e · Sep 30
$9,028 AUD
$6,203 USD
View
Price last confirmed 37 days ago
24 more retailers have this diamond
Prices start from $3,413 AUDSave up to $3,787 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.

B+
1.50ct Radiant
$3,413 AUD