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Cushion|Lab Grown|IGI

1.05ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG689561794

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689561794

Diamond specifications and retailer prices

From $272 CAD
$195 USD
As of October 28, 2026
Save $1,282 CAD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,555 CAD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.05ct lab-grown cushion diamond

This 1.05ct lab-grown cushion 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 LG689561794 or 689561794. Listed at 13 retailers as of October 28, 2026, with prices from $272 to $1,555, a $1,282 spread on the same certified stone. Reve Diamonds lists it at $1,555. 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

1.05
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689561794
Dimensions7.05 × 5.48 × 3.60 mm
L/W Ratio1.29
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
7.05 mm5.48 mm1.05 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689561794
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 65.7%

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 28
Current: $542 CAD|Low: $191 CAD|High: $1,555 CAD|Avg: $765 CAD|+5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 1, 2026
Retailer 12$272 CAD
Retailer 8$490 CAD
Retailer 11$539 CAD
Retailer 1$542 CAD
Retailer 4$562 CAD
Retailer 5$582 CAD
Retailer 9$641 CAD
Retailer 7$754 CAD
Retailer 10$795 CAD
Retailer 3$852 CAD
Retailer 2$1,049 CAD
Retailer 6$1,423 CAD
Reve Diamonds$1,555 CAD

42 data points across 13 retailers

13 retailers$272 CAD to $1,555 CAD

A
Cheapest Retailer
-
$272 CAD
$195 USD
Final sale: no returns
A
Retailer 2
-
$490 CAD
$351 USD
View
A
Retailer 3
-
$539 CAD
$386 USD
View
A
Retailer 4
-
$542 CAD
£306 GBP
View
B+
Retailer 5
-
$582 CAD
€397 EUR
View
B+
Retailer 6
-
$641 CAD
$459 USD
View
Retailer 7
-
$754 CAD
$540 USD
View
Price last confirmed 13 days ago
Retailer 8
-
$793 CAD
$568 USD
View
Price last confirmed 83 days ago
B
Retailer 9
-
$795 CAD
$569 USD
View
B+
Retailer 10
-
$852 CAD
$610 USD
View
B
Retailer 11
-
$1,049 CAD
$751 USD
View
B
Retailer 12
-
$1,423 CAD
£802 GBP
View
Most Expensive
B
Reve Diamonds
77376367C · Oct 30
$1,555 CAD
$1,113 USD
View
12 more retailers have this diamond
Prices start from $272 CADSave up to $1,282 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
1.05ct Cushion
$272 CAD