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Marquise|Natural|IGI

1.51ct J SI2 Marquise Natural Diamond

EX • J/SI2 • IGI 762534384

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 762534384

Diamond specifications and retailer prices

From $4,393 AUD
$3,079 USD
As of October 31, 2026
Save $4,228 AUD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,621 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 762534384. Listed at 14 retailers as of October 30, 2026, with prices from $4,393 to $8,621, a $4,228 spread on the same certified stone. NZ Jewellers lists it at $8,621. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 762534384
Dimensions11.68 × 5.98 × 3.75 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Top View
11.68 mm5.98 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 762534384
Side View
Table 59.0%Crown 35.8°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $8,621 AUD|Low: $4,393 AUD|High: $8,885 AUD|Avg: $5,889 AUD|-3.0%
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 2, 2026
Retailer 12$4,393 AUD
Retailer 4$4,566 AUD
Retailer 11$4,696 AUD
Retailer 13$4,738 AUD
Retailer 6$4,892 AUD
Retailer 9$4,948 AUD
Retailer 5$5,100 AUD
Retailer 2$5,138 AUD
Retailer 8$5,155 AUD
Retailer 3$5,709 AUD
Retailer 7$5,791 AUD
Retailer 10$8,276 AUD
NZ Jewellers$8,621 AUD

45 data points across 13 retailers

14 retailers$4,393 AUD to $8,621 AUD

A
Cheapest Retailer
-
$4,393 AUD
$3,079 USD
A
Retailer 2
-
$4,566 AUD
$3,200 USD
View
Final sale: no returns
A
Retailer 3
-
$4,696 AUD
$3,291 USD
View
A
Retailer 4
-
$4,738 AUD
$3,320 USD
View
A
Retailer 5
-
$4,892 AUD
£2,700 GBP
View
A
Retailer 6
-
$4,948 AUD
$3,468 USD
View
A
Retailer 7
-
$5,100 AUD
$3,574 USD
View
Retailer 8
-
$5,100 AUD
$3,574 USD
View
Price last confirmed 17 days ago
A
Retailer 9
-
$5,138 AUD
$3,601 USD
View
A
Retailer 10
-
$5,155 AUD
$3,613 USD
View
A
Retailer 11
-
$5,709 AUD
$4,001 USD
View
A
Retailer 12
-
$5,791 AUD
€3,865 EUR
View
B+
Retailer 13
-
$8,276 AUD
£4,567 GBP
View
Most Expensive
B+
NZ Jewellers
c5fb1da5-b97b-4ff4-b4f0-bc743ac49258 · Oct 30
$8,621 AUD
$6,042 USD
View
13 more retailers have this diamond
Prices start from $4,393 AUDSave up to $4,228 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
1.51ct Marquise
$4,393 AUD