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Round|Lab Grown|IGI

1.00ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG685511643

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685511643

Diamond specifications and retailer prices

From $198 CAD
$142 USD
As of October 29, 2026
Save $1,212 CAD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,411 CAD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown round diamond

This 1ct 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 LG685511643 or 685511643. Listed at 22 retailers as of October 29, 2026, with prices from $198 to $1,411, a $1,212 spread on the same certified stone. Reve Diamonds lists it at $1,411. 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
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685511643
Dimensions6.47 × 6.44 × 3.90 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.47 mm6.44 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685511643
Side View
Table 59.0%Crown 34.5°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 60.4%

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: $422 CAD|Low: $147 CAD|High: $1,411 CAD|Avg: $579 CAD|+7.4%
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
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
October 30, 2026
Retailer 6$198 CAD
Retailer 11$221 CAD
Retailer 12$230 CAD
Retailer 3$247 CAD
Retailer 16$247 CAD
Retailer 14$376 CAD
Retailer 1$422 CAD
Retailer 2$458 CAD
Retailer 10$485 CAD
Retailer 15$588 CAD
Retailer 8$643 CAD
Retailer 4$659 CAD
Retailer 13$670 CAD
Retailer 7$793 CAD
Retailer 5$871 CAD
Retailer 9$1,160 CAD
Reve Diamonds$1,411 CAD

43 data points across 17 retailers

22 retailers$198 CAD to $1,411 CAD

Retailer 1
-
$197 CAD
$141 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$198 CAD
$142 USD
View
A
Retailer 3
-
$221 CAD
$158 USD
View
Final sale: no returns
A
Retailer 4
-
$230 CAD
$165 USD
View
Retailer 5
-
$242 CAD
$173 USD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$247 CAD
$177 USD
View
A
Retailer 7
-
$247 CAD
$177 USD
View
A
Retailer 8
-
$376 CAD
$269 USD
View
A
Retailer 9
-
$422 CAD
£238 GBP
View
B+
Retailer 10
-
$458 CAD
$328 USD
View
B+
Retailer 11
-
$485 CAD
€331 EUR
View
Retailer 12
-
$566 CAD
$405 USD
View
Price last confirmed 88 days ago
B+
Retailer 13
-
$588 CAD
$421 USD
View
B+
Retailer 14
-
$643 CAD
$460 USD
View
B+
Retailer 15
-
$659 CAD
$472 USD
View
B+
Retailer 16
-
$670 CAD
A$738 AUD
View
Retailer 17
-
$752 CAD
$538 USD
View
Price last confirmed 38 days ago
Retailer 18
-
$786 CAD
$563 USD
View
Price last confirmed 39 days ago
B
Retailer 19
-
$793 CAD
$568 USD
View
B
Retailer 20
-
$871 CAD
$623 USD
View
B
Retailer 21
-
$1,160 CAD
£654 GBP
View
Most Expensive
B
Reve Diamonds
FD1186601 · Oct 30
$1,411 CAD
$1,010 USD
View
21 more retailers have this diamond
Prices start from $198 CADSave up to $1,212 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 Round
$198 CAD