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Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1535711463

Certificate GIA 1535711463

Diamond specifications and retailer prices

From $4,518 AUD
As of November 4, 2026
Save $5,633 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,577 AUD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round 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 and certified by GIA 1535711463. Listed at 18 retailers as of November 2, 2026, with a 125% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1535711463
Dimensions7.32 × 7.29 × 4.49 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.32 mm7.29 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1535711463
Side View
Table 59.0%Crown 36°Girdle: Sli. ThickPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $10,577 AUD|Low: $4,518 AUD|High: $10,577 AUD|Avg: $6,928 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4$4,518 AUD
Retailer 10$4,914 AUD
Retailer 12$5,087 AUD
Retailer 13$5,257 AUD
Retailer 3$5,711 AUD
Retailer 9$6,114 AUD
Retailer 2$6,611 AUD
Retailer 5$6,635 AUD
Retailer 8$6,817 AUD
Retailer 7$6,857 AUD
Retailer 6$7,410 AUD
Retailer 11$10,151 AUD
NZ Jewellers$10,577 AUD

36 data points across 13 retailers

18 retailers$4,518 AUD to $10,151 AUD

A
Cheapest Retailer
-
$4,518 AUD
A
Retailer 2
-
$4,883 AUD
View
A
Retailer 3
-
$4,914 AUD
View
B+
Retailer 4
-
$5,087 AUD
View
B+
Retailer 5
-
$5,257 AUD
View
Retailer 6
-
$5,500 AUD
View
Price last confirmed 15 days ago
Retailer 7
-
$5,500 AUD
View
Price last confirmed 21 days ago
Retailer 8
-
$5,711 AUD
View
Price last confirmed 15 days ago
B+
Retailer 9
-
$6,114 AUD
View
Retailer 10
-
$6,347 AUD
View
Price last confirmed 16 days ago
B+
Retailer 11
-
$6,611 AUD
View
B+
Retailer 12
-
$6,635 AUD
View
B+
Retailer 13
-
$6,817 AUD
View
B+
Retailer 14
-
$6,857 AUD
View
Retailer 15
-
$6,868 AUD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$7,410 AUD
View
B
Retailer 17
-
$10,151 AUD
View
Most Expensive
NZ Jewellers
33a4f54c-80f2-41f5-a39c-395b47ca8e26 · Oct 20
$10,577 AUD
$7,404 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from $4,518 AUDSave up to $5,633 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 Round
$4,518 AUD