CaratHunter
Plans
Marquise|Lab Grown|IGI

1.09ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG817695830

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817695830

Diamond specifications and retailer prices

From $235 CAD
As of November 6, 2026
Save $1,302 CAD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,536 CAD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG817695830 or 817695830. Listed at 19 retailers as of November 4, 2026, with prices from $235 to $1,536, a $1,302 spread on the same certified stone. Brilliant Earth lists it at $1,536. 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

1.09
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695830
Dimensions10.94 × 5.27 × 3.28 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.94 mm5.27 mm1.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695830
Side View
Table 62.0%Crown 37°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.2%

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 6
Current: $1,536 CAD|Low: $228 CAD|High: $1,536 CAD|Avg: $640 CAD|+0.9%
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
Retailer 18
November 6, 2026
Retailer 4$235 CAD
Retailer 15$272 CAD
Retailer 16$290 CAD
Retailer 2$295 CAD
Retailer 11$345 CAD
Retailer 8$483 CAD
Retailer 12$511 CAD
Retailer 3$515 CAD
Retailer 5$521 CAD
Retailer 9$535 CAD
Retailer 18$669 CAD
Retailer 14$746 CAD
Retailer 10$803 CAD
Retailer 17$934 CAD
Retailer 7$1,011 CAD
Retailer 13$1,356 CAD
Retailer 6$1,524 CAD
Brilliant Earth$1,536 CAD

32 data points across 18 retailers

19 retailers$235 CAD to $1,536 CAD

A
Cheapest Retailer
-
$235 CAD
A
Retailer 2
-
$272 CAD
View
Retailer 3
-
$282 CAD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$290 CAD
View
A
Retailer 5
-
$295 CAD
View
Final sale: no returns
A
Retailer 6
-
$345 CAD
View
Retailer 7
-
$483 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$511 CAD
View
B+
Retailer 9
-
$515 CAD
View
B+
Retailer 10
-
$521 CAD
View
Retailer 11
-
$535 CAD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$669 CAD
View
B+
Retailer 13
-
$746 CAD
View
Retailer 14
-
$803 CAD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$934 CAD
View
B
Retailer 16
-
$1,011 CAD
View
B
Retailer 17
-
$1,356 CAD
View
B
Retailer 18
-
$1,524 CAD
View
Most Expensive
B
Brilliant Earth
20750167A · Nov 4
$1,536 CAD
$1,100 USD
View
18 more retailers have this diamond
Prices start from $235 CADSave up to $1,302 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
1.09ct Marquise
$235 CAD