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Cushion|Lab Grown|IGI

1.74ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG526288478

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526288478

Diamond specifications and retailer prices

From $328 CAD
$234 USD
As of October 28, 2026
Save $2,766 CAD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,093 CAD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.74ct lab-grown cushion diamond

This 1.74ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG526288478 or 526288478. Listed at 15 retailers as of October 28, 2026, with prices from $328 to $3,093, a $2,766 spread on the same certified stone. Brilliant Earth lists it at $3,093. 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

1.74
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288478
Dimensions7.05 × 6.86 × 4.23 mm
L/W Ratio1.03
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 mm6.86 mm1.74 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288478
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 31.9°Culet: NoneDepth 61.7%

Caratlytics Score

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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: $3,093 CAD|Low: $328 CAD|High: $3,093 CAD|Avg: $928 CAD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 3$328 CAD
Retailer 11$364 CAD
Retailer 5$490 CAD
Retailer 2$595 CAD
Retailer 6$669 CAD
Retailer 4$739 CAD
Retailer 9$762 CAD
Retailer 12$838 CAD
Retailer 10$936 CAD
Retailer 7$1,461 CAD
Retailer 8$1,477 CAD
Brilliant Earth$3,093 CAD

42 data points across 12 retailers

15 retailers$328 CAD to $3,093 CAD

A
Cheapest Retailer
-
$328 CAD
$234 USD
Final sale: no returns
A
Retailer 2
-
$364 CAD
$260 USD
View
B+
Retailer 3
-
$490 CAD
$350 USD
View
A
Retailer 4
-
$595 CAD
€405 EUR
View
A
Retailer 5
-
$669 CAD
£376 GBP
View
A
Retailer 6
-
$739 CAD
$528 USD
View
A
Retailer 7
-
$762 CAD
A$838 AUD
View
A
Retailer 8
-
$810 CAD
$579 USD
View
A
Retailer 9
-
$838 CAD
$599 USD
View
B+
Retailer 10
-
$936 CAD
$669 USD
View
B+
Retailer 11
-
$1,244 CAD
$889 USD
View
B+
Retailer 12
-
$1,461 CAD
£822 GBP
View
B+
Retailer 13
-
$1,477 CAD
$1,055 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
$1,714 CAD
$1,225 USD
View
Most Expensive
B
Brilliant Earth
10788643A · Oct 28
$3,093 CAD
$2,210 USD
View
14 more retailers have this diamond
Prices start from $328 CADSave up to $2,766 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
1.74ct Cushion
$328 CAD