Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

GD • J/SI1 • GIA 2457222138

Certificate GIA 2457222138

Diamond specifications and retailer prices

From $4,614 AUD
As of November 4, 2026
Save $5,108 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,282 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 2457222138. Listed at 22 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
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2457222138
Dimensions6.87 × 5.71 × 4.00 mm
L/W Ratio1.20
Top View
6.87 mm5.71 mm1.50 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2457222138
Side View
Table 73.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.1%

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: $5,632 AUD|Low: $4,113 AUD|High: $9,988 AUD|Avg: $6,194 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9$4,614 AUD
Retailer 2$4,748 AUD
Retailer 10$4,935 AUD
Retailer 3$5,347 AUD
Retailer 1$5,632 AUD
Retailer 4$5,720 AUD
Retailer 6$5,977 AUD
Retailer 11$6,327 AUD
Retailer 7$6,577 AUD
Retailer 8$7,203 AUD
Retailer 5$9,722 AUD

46 data points across 11 retailers

22 retailers$4,614 AUD to $9,722 AUD

B+
Cheapest Retailer
-
$4,614 AUD
B+
Retailer 2
-
$4,748 AUD
View
B+
Retailer 3
-
$4,935 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,130 AUD
View
B+
Retailer 5
-
$5,283 AUD
View
Retailer 6
-
$5,347 AUD
View
Price last confirmed 37 days ago
B+
Retailer 7
-
$5,347 AUD
View
Retailer 8
-
$5,552 AUD
View
Price last confirmed 38 days ago
Retailer 9
-
$5,632 AUD
View
B+
Retailer 10
-
$5,667 AUD
View
Retailer 11
-
$5,720 AUD
View
B+
Retailer 12
-
$5,977 AUD
View
B+
Retailer 13
-
$6,040 AUD
View
B+
Retailer 14
-
$6,040 AUD
View
Retailer 15
-
$6,169 AUD
View
Price last confirmed 39 days ago
B
Retailer 16
-
$6,244 AUD
View
Retailer 17
-
$6,327 AUD
View
Price last confirmed 34 days ago
B
Retailer 18
-
$6,577 AUD
View
Retailer 19
-
$6,680 AUD
View
Price last confirmed 15 days ago
B
Retailer 20
-
$7,203 AUD
View
B
Retailer 21
-
$9,722 AUD
View
Most Expensive
NZ Jewellers
54a61131-ff84-4119-8033-69365cc1f830 · Sep 30
$10,282 AUD
$7,065 USD
View
Price last confirmed 37 days ago
21 more retailers have this diamond
Prices start from $4,614 AUDSave up to $5,108 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
$4,614 AUD