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Cushion|Lab Grown|IGI

3.12ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG653449879

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG653449879

Diamond specifications and retailer prices

From $1,103 CAD
$788 USD
As of October 28, 2026
Save $3,880 CAD (78%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,983 CAD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown cushion diamond

This 3.12ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG653449879 or 653449879. Listed at 5 retailers as of October 28, 2026, with prices from $1,103 to $4,983, a $3,880 spread on the same certified stone. Do Amore Diamonds lists it at $4,983. 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

3.12
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG653449879
Dimensions8.55 × 8.44 × 5.61 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
8.55 mm8.44 mm3.12 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG653449879
Side View
Table 61.0%Crown 34.5°Girdle: THN-MEDPavilion 40.1°Culet: NoneDepth 66.5%

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 28
Current: $4,983 CAD|Low: $882 CAD|High: $4,983 CAD|Avg: $2,854 CAD|+3.2%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5$1,103 CAD
Retailer 3$1,106 CAD
Retailer 6$1,482 CAD
Retailer 7$1,963 CAD
Retailer 2$2,835 CAD
Retailer 4$2,841 CAD
Retailer 8$4,353 CAD
Do Amore Diamonds$4,983 CAD

17 data points across 8 retailers

5 retailers$1,103 CAD to $4,983 CAD

B+
Cheapest Retailer
-
$1,103 CAD
$788 USD
A
Retailer 2
-
$1,106 CAD
$790 USD
View
B+
Retailer 3
-
$2,835 CAD
£1,595 GBP
View
B+
Retailer 4
-
$2,841 CAD
$2,030 USD
View
Most Expensive
B
Do Amore Diamonds
27-8CB5ED9B3 · Oct 29
$4,983 CAD
$3,560 USD
View
4 more retailers have this diamond
Prices start from $1,103 CADSave up to $3,880 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
3.12ct Cushion
$1,103 CAD