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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

VG • K/SI1 • GIA 2457221982

Certificate GIA 2457221982

Diamond specifications and retailer prices

From $4,075 AUD
As of November 4, 2026
Save $4,579 AUD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,041 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2457221982. Listed at 15 retailers as of November 4, 2026, with a 112% 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2457221982
Dimensions6.94 × 5.77 × 3.96 mm
L/W Ratio1.20
Top View
6.94 mm5.77 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2457221982
Side View
Table 72.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,369 AUD|Low: $4,075 AUD|High: $8,783 AUD|Avg: $5,566 AUD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$4,075 AUD
Retailer 7$4,158 AUD
Retailer 4$4,173 AUD
Retailer 9$4,555 AUD
Retailer 8$4,701 AUD
Retailer 1$5,369 AUD
Retailer 2$5,982 AUD
Retailer 3$6,334 AUD
Retailer 5$8,654 AUD

45 data points across 9 retailers

15 retailers$4,075 AUD to $8,654 AUD

A
Cheapest Retailer
-
$4,075 AUD
A
Retailer 2
-
$4,158 AUD
View
B+
Retailer 3
-
$4,173 AUD
View
B+
Retailer 4
-
$4,555 AUD
View
B+
Retailer 5
-
$4,694 AUD
View
Retailer 6
-
$4,701 AUD
View
Price last confirmed 37 days ago
B+
Retailer 7
-
$4,726 AUD
View
Retailer 8
-
$4,881 AUD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$5,369 AUD
View
Retailer 10
-
$5,424 AUD
View
Price last confirmed 39 days ago
Retailer 11
-
$5,878 AUD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$5,982 AUD
View
B+
Retailer 13
-
$6,334 AUD
View
B
Retailer 14
-
$8,654 AUD
View
Most Expensive
NZ Jewellers
cd4b2a51-ffbe-426e-9469-13044b3e8e67 · Sep 30
$9,041 AUD
$6,212 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $4,075 AUDSave up to $4,579 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
$4,075 AUD