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Marquise|Lab Grown|IGI

1.50ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG567351261

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG567351261

Diamond specifications and retailer prices

From $440 AUD
$309 USD
As of November 1, 2026
Save $1,426 AUD (76%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,106 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.5ct lab-grown marquise diamond

This 1.5ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567351261 or 567351261. Listed at 22 retailers as of November 1, 2026, with a 324% 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567351261
Dimensions11.75 × 5.92 × 3.80 mm
L/W Ratio1.98
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.75 mm5.92 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567351261
Side View
Table 59.0%Crown 35.9°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.2%

Caratlytics Score

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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 1
Current: $1,866 AUD|Low: $376 AUD|High: $2,589 AUD|Avg: $1,083 AUD|-27.8%
Retailer 1
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
November 1, 2026
Retailer 5$376 AUD
Retailer 13$440 AUD
Retailer 3$466 AUD
Retailer 15$547 AUD
Retailer 14$658 AUD
Retailer 10$662 AUD
Retailer 4$725 AUD
Retailer 9$774 AUD
Retailer 12$839 AUD
Retailer 8$891 AUD
Retailer 6$1,034 AUD
Retailer 11$1,429 AUD
Retailer 7$1,573 AUD
Retailer 2$1,865 AUD
Retailer 1$1,866 AUD

43 data points across 15 retailers

22 retailers$440 AUD to $1,866 AUD

Retailer 1
-
$376 AUD
$264 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$440 AUD
$309 USD
View
Final sale: no returns
Retailer 3
-
$466 AUD
$327 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$466 AUD
$327 USD
View
Price last confirmed 22 days ago
Retailer 5
-
$528 AUD
$371 USD
View
Price last confirmed 33 days ago
A
Retailer 6
-
$547 AUD
HK$3,000 HKD
View
Retailer 7
-
$612 AUD
$430 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$646 AUD
$454 USD
View
Price last confirmed 34 days ago
A
Retailer 9
-
$658 AUD
$462 USD
View
A
Retailer 10
-
$662 AUD
$465 USD
View
A
Retailer 11
-
$725 AUD
$509 USD
View
A
Retailer 12
-
$774 AUD
€518 EUR
View
B+
Retailer 13
-
$839 AUD
$589 USD
View
B+
Retailer 14
-
$891 AUD
£493 GBP
View
Retailer 15
-
$1,034 AUD
$726 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$1,429 AUD
$1,004 USD
View
B
Retailer 17
-
$1,496 AUD
$1,051 USD
View
Retailer 18
-
$1,496 AUD
$1,051 USD
View
Price last confirmed 22 days ago
B
Retailer 19
-
$1,573 AUD
SGD 1,493 SGD
View
B
Retailer 20
-
$1,865 AUD
$1,310 USD
View
B
Retailer 21
-
$1,866 AUD
£1,032 GBP
View
Most Expensive
NZ Jewellers
e7d27fde-2fca-499b-8653-22fec6f03616 · Sep 30
$2,106 AUD
$1,479 USD
View
Price last confirmed 32 days ago
21 more retailers have this diamond
Prices start from $440 AUDSave up to $1,426 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 Marquise
$440 AUD