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Marquise|Lab Grown|IGI

1.50ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG840628028

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840628028

Diamond specifications and retailer prices

From $453 AUD
As of November 4, 2026
Save $2,147 AUD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,600 AUD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG840628028 or 840628028. Listed at 10 retailers as of November 4, 2026, with prices from $453 to $2,600, a $2,147 spread on the same certified stone. Do Amore Diamonds lists it at $2,600. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840628028
Dimensions11.94 × 5.78 × 3.79 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.94 mm5.78 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840628028
Side View
Table 59.0%Crown 34.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 65.6%

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 4
Current: $2,600 AUD|Low: $453 AUD|High: $2,600 AUD|Avg: $1,012 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7$453 AUD
Retailer 2$470 AUD
Retailer 3$509 AUD
Retailer 9$651 AUD
Retailer 5$1,083 AUD
Retailer 8$1,250 AUD
Retailer 4$1,451 AUD
Retailer 6$1,494 AUD
Retailer 10$1,674 AUD
Do Amore Diamonds$2,600 AUD

5 data points across 10 retailers

10 retailers$453 AUD to $2,600 AUD

B+
Cheapest Retailer
-
$453 AUD
A
Retailer 2
-
$470 AUD
View
A
Retailer 3
-
$509 AUD
View
Retailer 4
-
$651 AUD
View
Price last confirmed 10 days ago
B+
Retailer 5
-
$1,083 AUD
View
B
Retailer 6
-
$1,250 AUD
View
B
Retailer 7
-
$1,451 AUD
View
B
Retailer 8
-
$1,494 AUD
View
Retailer 9
-
$1,674 AUD
View
Price last confirmed 11 days ago
Most Expensive
B
Do Amore Diamonds
27-1220E159A · Nov 6
$2,600 AUD
$1,820 USD
View
9 more retailers have this diamond
Prices start from $453 AUDSave up to $2,147 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
$453 AUD