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Marquise|Lab Grown|IGI

1.58ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG803633420

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803633420

Diamond specifications and retailer prices

From $359 CAD
$257 USD
As of October 24, 2026
Save $1,555 CAD (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,914 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.58ct lab-grown marquise diamond

This 1.58ct 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 LG803633420 or 803633420. Listed at 17 retailers as of October 24, 2026, with prices from $359 to $1,914, a $1,555 spread on the same certified stone. Brilliant Earth lists it at $1,914. 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

1.58
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803633420
Dimensions11.79 × 6.18 × 3.80 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.79 mm6.18 mm1.58 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803633420
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 61.5%

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: Oct 24
Current: $1,914 CAD|Low: $296 CAD|High: $1,984 CAD|Avg: $892 CAD|-3.5%
Brilliant Earth
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
Retailer 16
Retailer 17
October 31, 2026
Retailer 3$309 CAD
Retailer 4$344 CAD
Retailer 17$359 CAD
Retailer 9$383 CAD
Retailer 11$428 CAD
Retailer 10$619 CAD
Retailer 16$654 CAD
Retailer 12$709 CAD
Retailer 6$742 CAD
Retailer 7$771 CAD
Retailer 2$788 CAD
Retailer 15$999 CAD
Retailer 5$1,232 CAD
Retailer 8$1,243 CAD
Retailer 13$1,538 CAD
Retailer 14$1,551 CAD
Brilliant Earth$1,914 CAD

42 data points across 17 retailers

17 retailers$359 CAD to $1,914 CAD

Retailer 1
-
$309 CAD
$221 USD
Price last confirmed 8 days ago
A
Retailer 2
-
$359 CAD
$257 USD
View
A
Retailer 3
-
$383 CAD
$274 USD
View
A
Retailer 4
-
$428 CAD
£241 GBP
View
A
Retailer 5
-
$429 CAD
HK$2,400 HKD
View
A
Retailer 6
-
$619 CAD
€422 EUR
View
B+
Retailer 7
-
$654 CAD
$468 USD
View
A
Retailer 8
-
$709 CAD
£399 GBP
View
A
Retailer 9
-
$742 CAD
$531 USD
View
A
Retailer 10
-
$771 CAD
$552 USD
View
B+
Retailer 11
-
$788 CAD
A$868 AUD
View
B+
Retailer 12
-
$999 CAD
$715 USD
View
B+
Retailer 13
-
$1,232 CAD
$882 USD
View
B+
Retailer 14
-
$1,243 CAD
SGD 1,202 SGD
View
B
Retailer 15
-
$1,538 CAD
£867 GBP
View
B
Retailer 16
-
$1,551 CAD
$1,110 USD
View
Most Expensive
B
Brilliant Earth
19868126A · Oct 29
$1,914 CAD
$1,370 USD
View
16 more retailers have this diamond
Prices start from $359 CADSave up to $1,555 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
1.58ct Marquise
$359 CAD