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Round|Natural|IGI

1.50ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 742527340

Shape and cutting style on the report: Round brilliant

Certificate IGI 742527340

Diamond specifications and retailer prices

From $3,470 AUD
As of November 6, 2026
Save $3,941 AUD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,741 AUD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 742527340. Listed at 17 retailers as of November 4, 2026, with a 114% 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 742527340
Dimensions7.27 × 7.22 × 4.60 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.27 mm7.22 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 742527340
Side View
Table 56.0%Crown 36.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.5%

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: $3,470 AUD|Low: $3,470 AUD|High: $7,520 AUD|Avg: $5,029 AUD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$3,470 AUD
Retailer 9$3,981 AUD
Retailer 8$4,097 AUD
Retailer 3$4,649 AUD
Retailer 4$5,101 AUD
Retailer 7$5,178 AUD
Retailer 2$5,277 AUD
Retailer 5$5,423 AUD
Retailer 6$7,411 AUD

28 data points across 9 retailers

17 retailers$3,470 AUD to $7,411 AUD

A
Cheapest Retailer
-
$3,470 AUD
A
Retailer 2
-
$3,979 AUD
View
A
Retailer 3
-
$3,981 AUD
View
Retailer 4
-
$4,007 AUD
View
Price last confirmed 95 days ago
A
Retailer 5
-
$4,097 AUD
View
Retailer 6
-
$4,443 AUD
View
Price last confirmed 25 days ago
Retailer 7
-
$4,443 AUD
View
Price last confirmed 29 days ago
Retailer 8
-
$4,614 AUD
View
Price last confirmed 38 days ago
A
Retailer 9
-
$4,649 AUD
View
B+
Retailer 10
-
$4,650 AUD
View
A
Retailer 11
-
$5,101 AUD
View
Retailer 12
-
$5,127 AUD
View
Price last confirmed 28 days ago
A
Retailer 13
-
$5,178 AUD
View
A
Retailer 14
-
$5,277 AUD
View
B+
Retailer 15
-
$5,423 AUD
View
B
Retailer 16
-
$7,411 AUD
View
Most Expensive
NZ Jewellers
94aeded2-6ad3-4a7a-a6fe-65dddb15ba8d · Sep 28
$7,741 AUD
$5,319 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from $3,470 AUDSave up to $3,941 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
$3,470 AUD