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Marquise|Lab Grown|IGI

1.50ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG844608672

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844608672

Diamond specifications and retailer prices

From $320 AUD
$224 USD
As of November 1, 2026
Save $1,336 AUD (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,655 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG844608672 or 844608672. Listed at 3 retailers as of November 1, 2026, with prices from $320 to $1,655, a $1,336 spread on the same certified stone. Brilliant Earth lists it at $1,655. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844608672
Dimensions11.77 × 6.05 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.77 mm6.05 mm1.50 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844608672
Side View
Table 62.0%Crown 34.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,655 AUD|Low: $320 AUD|High: $2,369 AUD|Avg: $1,166 AUD|-30.1%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3$320 AUD
Retailer 2$670 AUD
Brilliant Earth$1,655 AUD

21 data points across 3 retailers

3 retailers$320 AUD to $1,655 AUD

A
Cheapest Retailer
-
$320 AUD
$224 USD
Final sale: no returns
A
Retailer 2
-
$670 AUD
£370 GBP
View
Most Expensive
B
Brilliant Earth
21815974A · Nov 2
$1,655 AUD
$1,160 USD
View
2 more retailers have this diamond
Prices start from $320 AUDSave up to $1,336 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
$320 AUD