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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 019A

Certificate GIA 019A

Diamond specifications and retailer prices

From $3,983 AUD
As of November 4, 2026
Save $5,058 AUD (56%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,041 AUD at NZ Jewellers · As of November 5, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 12 retailers as of November 4, 2026, with prices from $3,983 to $9,041, a $5,058 spread on the same certified stone. NZ Jewellers lists it at $9,041. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 019A
Dimensions6.94 × 5.77 × 3.96 mm
L/W Ratio1.20
Top View
6.94 mm5.77 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 019A
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: $9,041 AUD|Low: $3,983 AUD|High: $9,041 AUD|Avg: $5,425 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 5$3,983 AUD
Retailer 6$4,701 AUD
Retailer 7$4,701 AUD
Retailer 2$4,835 AUD
Retailer 3$4,985 AUD
Retailer 8$5,052 AUD
Retailer 4$5,372 AUD
NZ Jewellers$9,041 AUD

42 data points across 8 retailers

12 retailers$3,983 AUD to $9,041 AUD

A
Cheapest Retailer
-
$3,983 AUD
Retailer 2
-
$4,701 AUD
View
Price last confirmed 30 days ago
Retailer 3
-
$4,701 AUD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$4,701 AUD
View
Retailer 5
-
$4,701 AUD
View
Price last confirmed 31 days ago
A
Retailer 6
-
$4,835 AUD
View
A
Retailer 7
-
$4,985 AUD
View
B+
Retailer 8
-
$5,052 AUD
View
B+
Retailer 9
-
$5,372 AUD
View
Retailer 10
-
$5,424 AUD
View
Price last confirmed 31 days ago
Retailer 11
-
$9,041 AUD
View
Price last confirmed 32 days ago
Most Expensive
B
NZ Jewellers
d7049a66-61ec-4a72-b404-f00c6ba5444b · Nov 5
$9,041 AUD
$6,212 USD
View
11 more retailers have this diamond
Prices start from $3,983 AUDSave up to $5,058 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
$3,983 AUD