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Round|Natural|IGI

1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 754512323

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512323

Diamond specifications and retailer prices

From $4,024 AUD
₹269,216 INR
As of November 1, 2026
Save $4,684 AUD (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,708 AUD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512323. Listed at 18 retailers as of October 30, 2026, with prices from $4,024 to $8,708, a $4,684 spread on the same certified stone. NZ Jewellers lists it at $8,708. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 754512323
Dimensions7.21 × 7.25 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.21 mm7.25 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512323
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.4%

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 1
Current: $8,708 AUD|Low: $4,024 AUD|High: $8,984 AUD|Avg: $5,572 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 2$4,024 AUD
Retailer 16$4,299 AUD
Retailer 7$4,437 AUD
Retailer 5$4,505 AUD
Retailer 8$4,612 AUD
Retailer 18$4,900 AUD
Retailer 6$4,998 AUD
Retailer 13$4,998 AUD
Retailer 4$5,086 AUD
Retailer 14$5,190 AUD
Retailer 15$5,204 AUD
Retailer 11$5,406 AUD
Retailer 10$5,767 AUD
Retailer 3$5,795 AUD
Retailer 12$5,812 AUD
Retailer 9$7,667 AUD
Retailer 17$8,369 AUD
NZ Jewellers$8,708 AUD

36 data points across 18 retailers

18 retailers$4,024 AUD to $8,708 AUD

A
Cheapest Retailer
-
$4,024 AUD
₹269,216 INR
A
Retailer 2
-
$4,299 AUD
$3,020 USD
View
A
Retailer 3
-
$4,437 AUD
$3,117 USD
View
A
Retailer 4
-
$4,505 AUD
SGD 4,276 SGD
View
A
Retailer 5
-
$4,612 AUD
$3,240 USD
View
Final sale: no returns
A
Retailer 6
-
$4,900 AUD
$3,442 USD
View
A
Retailer 7
-
$4,998 AUD
$3,511 USD
View
A
Retailer 8
-
$4,998 AUD
$3,511 USD
View
A
Retailer 9
-
$5,086 AUD
$3,572 USD
View
A
Retailer 10
-
$5,190 AUD
$3,646 USD
View
A
Retailer 11
-
$5,204 AUD
$3,656 USD
View
A
Retailer 12
-
$5,406 AUD
£2,990 GBP
View
B+
Retailer 13
-
$5,767 AUD
$4,051 USD
View
A
Retailer 14
-
$5,795 AUD
£3,205 GBP
View
A
Retailer 15
-
$5,812 AUD
€3,888 EUR
View
B+
Retailer 16
-
$7,667 AUD
$5,386 USD
View
B+
Retailer 17
-
$8,369 AUD
£4,629 GBP
View
Most Expensive
B+
NZ Jewellers
00c94c50-0d12-4257-bd7e-735e84b4e8fe · Oct 30
$8,708 AUD
$6,117 USD
View
17 more retailers have this diamond
Prices start from $4,024 AUDSave up to $4,684 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
$4,024 AUD