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Round|Lab Grown|IGI

1.09ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG818686663

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818686663

Diamond specifications and retailer prices

From $200 CAD
$143 USD
As of October 29, 2026
Save $968 CAD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,168 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818686663 or 818686663. Listed at 15 retailers as of October 29, 2026, with prices from $200 to $1,168, a $968 spread on the same certified stone. MOH London lists it at $1,168. 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
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686663
Dimensions6.60 × 6.69 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.60 mm6.69 mm1.09 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686663
Side View
Table 56.0%Crown 35.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
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 29
Current: $1,168 CAD|Low: $200 CAD|High: $1,244 CAD|Avg: $571 CAD|-6.1%
MOH London
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
October 30, 2026
Retailer 9$200 CAD
Retailer 6$246 CAD
Retailer 5$249 CAD
Retailer 7$263 CAD
Retailer 8$426 CAD
Retailer 10$441 CAD
Retailer 14$463 CAD
Retailer 13$476 CAD
Retailer 2$555 CAD
Retailer 11$596 CAD
Retailer 3$627 CAD
Retailer 12$686 CAD
Retailer 4$799 CAD
Retailer 15$877 CAD
MOH London$1,168 CAD

27 data points across 15 retailers

15 retailers$200 CAD to $1,168 CAD

A
Cheapest Retailer
-
$200 CAD
$143 USD
A
Retailer 2
-
$246 CAD
$176 USD
View
A
Retailer 3
-
$249 CAD
$178 USD
View
A
Retailer 4
-
$263 CAD
$188 USD
View
A
Retailer 5
-
$426 CAD
£240 GBP
View
A
Retailer 6
-
$441 CAD
€300 EUR
View
A
Retailer 7
-
$463 CAD
$331 USD
View
A
Retailer 8
-
$476 CAD
$340 USD
View
B+
Retailer 9
-
$555 CAD
£312 GBP
View
B+
Retailer 10
-
$596 CAD
$426 USD
View
B+
Retailer 11
-
$627 CAD
$448 USD
View
B+
Retailer 12
-
$686 CAD
$490 USD
View
B+
Retailer 13
-
$799 CAD
$571 USD
View
B
Retailer 14
-
$877 CAD
$627 USD
View
Most Expensive
B
MOH London
LG818686663 · Oct 29
$1,168 CAD
£657 GBP
View
14 more retailers have this diamond
Prices start from $200 CADSave up to $968 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 Round
$200 CAD