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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG770639320

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770639320

Diamond specifications and retailer prices

From $207 CAD
$148 USD
As of October 29, 2026
Save $1,232 CAD (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,439 CAD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770639320 or 770639320. Listed at 18 retailers as of October 28, 2026, with prices from $207 to $1,439, a $1,232 spread on the same certified stone. Reve Diamonds lists it at $1,439. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770639320
Dimensions6.61 × 6.63 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.61 mm6.63 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770639320
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.2%

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: Oct 29
Current: $443 CAD|Low: $199 CAD|High: $1,218 CAD|Avg: $533 CAD|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 10$207 CAD
Retailer 5$231 CAD
Retailer 3$241 CAD
Retailer 12$258 CAD
Retailer 1$443 CAD
Retailer 13$474 CAD
Retailer 7$488 CAD
Retailer 6$504 CAD
Retailer 2$603 CAD
Retailer 11$714 CAD
Retailer 4$827 CAD
Retailer 8$873 CAD
Retailer 9$1,203 CAD

41 data points across 13 retailers

18 retailers$207 CAD to $1,439 CAD

A
Cheapest Retailer
-
$207 CAD
$148 USD
A
Retailer 2
-
$231 CAD
$165 USD
View
Final sale: no returns
A
Retailer 3
-
$241 CAD
$172 USD
View
A
Retailer 4
-
$258 CAD
$184 USD
View
A
Retailer 5
-
$258 CAD
$184 USD
View
A
Retailer 6
-
$432 CAD
$309 USD
View
A
Retailer 7
-
$443 CAD
£249 GBP
View
B+
Retailer 8
-
$474 CAD
$339 USD
View
B+
Retailer 9
-
$488 CAD
€332 EUR
View
A
Retailer 10
-
$504 CAD
£283 GBP
View
B+
Retailer 11
-
$603 CAD
$431 USD
View
B
Retailer 12
-
$661 CAD
$472 USD
View
B+
Retailer 13
-
$714 CAD
$510 USD
View
B
Retailer 14
-
$827 CAD
$591 USD
View
B
Retailer 15
-
$873 CAD
$624 USD
View
B
Retailer 16
-
$904 CAD
$646 USD
View
B
Retailer 17
-
$1,203 CAD
£677 GBP
View
Most Expensive
B
Reve Diamonds
0394E2DC1 · Oct 28
$1,439 CAD
$1,028 USD
View
17 more retailers have this diamond
Prices start from $207 CADSave up to $1,232 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
$207 CAD