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Radiant|Natural|GIA

1.50ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 7531645928

Certificate GIA 7531645928

Diamond specifications and retailer prices

From $3,167 AUD
As of November 6, 2026
Save $4,050 AUD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,695 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7531645928. Listed at 15 retailers as of November 4, 2026, with a 128% 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7531645928
Dimensions7.52 × 5.76 × 3.94 mm
L/W Ratio1.31
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Cavity, Needle, Indented Natural, Natural
Top View
7.52 mm5.76 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7531645928
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.4%

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 6
Current: $4,372 AUD|Low: $3,167 AUD|High: $7,373 AUD|Avg: $4,428 AUD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7$3,167 AUD
Retailer 2$3,375 AUD
Retailer 5$3,752 AUD
Retailer 8$4,336 AUD
Retailer 1$4,372 AUD
Retailer 3$4,414 AUD
Retailer 4$4,807 AUD
Retailer 6$7,217 AUD

34 data points across 8 retailers

15 retailers$3,167 AUD to $7,217 AUD

A
Cheapest Retailer
-
$3,167 AUD
A
Retailer 2
-
$3,375 AUD
View
A
Retailer 3
-
$3,752 AUD
View
A
Retailer 4
-
$3,985 AUD
View
Retailer 5
-
$4,158 AUD
View
Price last confirmed 22 days ago
Retailer 6
-
$4,158 AUD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$4,226 AUD
View
Retailer 8
-
$4,318 AUD
View
Price last confirmed 22 days ago
A
Retailer 9
-
$4,336 AUD
View
A
Retailer 10
-
$4,372 AUD
View
A
Retailer 11
-
$4,414 AUD
View
Retailer 12
-
$4,798 AUD
View
Price last confirmed 19 days ago
A
Retailer 13
-
$4,807 AUD
View
B
Retailer 14
-
$7,217 AUD
View
Most Expensive
NZ Jewellers
89a0dc79-479f-4961-91dc-a03481122c15 · Oct 17
$8,695 AUD
$5,974 USD
View
Price last confirmed 20 days ago
14 more retailers have this diamond
Prices start from $3,167 AUDSave up to $4,050 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
$3,167 AUD