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Marquise|Lab Grown|IGI

1.00ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG436047370

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047370

Diamond specifications and retailer prices

From $838 CAD
As of November 4, 2026
Save $4,623 CAD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,461 CAD at MOH London · As of November 3, 2026
View at MOH London

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436047370 or 436047370. Listed at 11 retailers as of November 3, 2026, with prices from $838 to $5,461, a $4,623 spread on the same certified stone. MOH London lists it at $5,461. 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

1.00
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047370
Dimensions9.63 × 5.35 × 3.21 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.63 mm5.35 mm1.00 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047370
Side View
Table 54.5%Crown 34.2°Girdle: STK-VTKPavilion 38.5°Culet: NoneDepth 60.0%

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: Nov 4
Current: $5,461 CAD|Low: $838 CAD|High: $5,534 CAD|Avg: $2,646 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 2$838 CAD
Retailer 4$1,388 CAD
Retailer 7$1,554 CAD
Retailer 5$1,610 CAD
Retailer 8$1,857 CAD
Retailer 9$2,318 CAD
Retailer 6$2,573 CAD
Retailer 3$3,471 CAD
Retailer 10$4,612 CAD
MOH London$5,461 CAD

16 data points across 10 retailers

11 retailers$838 CAD to $5,461 CAD

A
Cheapest Retailer
-
$838 CAD
B+
Retailer 2
-
$1,388 CAD
View
B+
Retailer 3
-
$1,510 CAD
View
B
Retailer 4
-
$1,554 CAD
View
Final sale: no returns
Retailer 5
-
$1,610 CAD
View
Price last confirmed 25 days ago
B
Retailer 6
-
$1,610 CAD
View
B
Retailer 7
-
$1,857 CAD
View
B
Retailer 8
-
$2,573 CAD
View
B
Retailer 9
-
$3,018 CAD
View
B
Retailer 10
-
$3,471 CAD
View
Most Expensive
B
MOH London
LG436047370 · Nov 3
$5,461 CAD
£3,079 GBP
View
10 more retailers have this diamond
Prices start from $838 CADSave up to $4,623 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
1.00ct Marquise
$838 CAD