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Marquise|Lab Grown|IGI

1.50ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG154427

Certificate IGI LG154427

Diamond specifications and retailer prices

From $335 CAD
$240 USD
As of October 24, 2026
Save $1,963 CAD (85%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,298 CAD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 LG154427 or 154427. Listed at 3 retailers as of October 24, 2026, with prices from $335 to $2,298, a $1,963 spread on the same certified stone. Diamond Quarter lists it at $2,298. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG154427
Dimensions12.16 × 6.07 × 3.55 mm
L/W Ratio2.00
Top View
12.16 mm6.07 mm1.50 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG154427
Side View
Table 69.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 58.5%

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: Oct 24
Current: $2,298 CAD|Low: $335 CAD|High: $2,808 CAD|Avg: $1,671 CAD
Diamond Quarter
Retailer 2
Retailer 3
Retailer 4
October 21, 2026
Retailer 2$335 CAD
Retailer 3$1,152 CAD
Diamond Quarter$2,298 CAD
Retailer 4$2,808 CAD

6 data points across 4 retailers

3 retailers$335 CAD to $2,298 CAD

A
Cheapest Retailer
-
$335 CAD
$240 USD
B
Retailer 2
-
$1,152 CAD
$825 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1DLG06CFFDN · Oct 31
$2,298 CAD
£1,295 GBP
View
2 more retailers have this diamond
Prices start from $335 CADSave up to $1,963 CAD

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
$335 CAD