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Cushion|Lab Grown|IGI

1.67ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG12745718

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12745718

Diamond specifications and retailer prices

From $1,130 CAD
As of November 2, 2026
Save $364 CAD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,494 CAD at The Diamond Guys · As of November 3, 2026
View at The Diamond Guys

About this 1.67ct lab-grown cushion diamond

This 1.67ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12745718 or 12745718. Listed at 2 retailers as of November 2, 2026, with prices from $1,130 to $1,494, a $364 spread on the same certified stone. The Diamond Guys lists it at $1,494. 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

1.67
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle34.5°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12745718
Dimensions6.89 × 6.61 × 4.54 mm
L/W Ratio1.04
Culet sizePointed
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
6.89 mm6.61 mm1.67 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI LG12745718
Side View
Table 60.0%Crown 34.5°Girdle: THK-UNDPavilion 38.4°Culet: NoneDepth 68.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $711 CAD|Low: $284 CAD|High: $1,867 CAD|Avg: $1,139 CAD|-18.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
September 18, 2026
Retailer 2$586 CAD
Retailer 4$599 CAD
Retailer 7$664 CAD
Retailer 1$711 CAD
Retailer 5$830 CAD
Retailer 3$1,130 CAD
The Diamond Guys$1,494 CAD
Retailer 6$1,519 CAD

74 data points across 8 retailers

2 retailers$1,130 CAD to $1,494 CAD

B+
Cheapest Retailer
-
$1,130 CAD
Most Expensive
B
The Diamond Guys
1779252969 · Nov 3
$1,494 CAD
$1,069 USD
View
1 more retailer has this diamond
Prices start from $1,130 CADSave up to $364 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.

B+
1.67ct Cushion
$1,130 CAD