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Cushion|Lab Grown|IGI

1.51ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG581338943

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG581338943

Diamond specifications and retailer prices

From $1,670 CAD
£941 GBP
As of October 26, 2026
Save $831 CAD (33%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,501 CAD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG581338943 or 581338943. Listed at 4 retailers as of October 26, 2026, with prices from $1,670 to $2,501, a $831 spread on the same certified stone. Do Amore Diamonds lists it at $2,501. 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

1.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581338943
Dimensions7.98 × 6.04 × 4.08 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.98 mm6.04 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581338943
Side View
Table 60.0%Crown 34.3°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 67.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 26
Current: $2,501 CAD|Low: $555 CAD|High: $2,613 CAD|Avg: $1,191 CAD|-4.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 25, 2026
Retailer 4$567 CAD
Retailer 8$625 CAD
Retailer 7$762 CAD
Retailer 5$866 CAD
Retailer 6$1,078 CAD
Retailer 3$1,153 CAD
Retailer 9$1,579 CAD
Retailer 2$1,670 CAD
Do Amore Diamonds$2,501 CAD

11 data points across 9 retailers

4 retailers$1,670 CAD to $2,501 CAD

Retailer 1
-
$567 CAD
$406 USD
Price last confirmed 8 days ago
Retailer 2
-
$1,153 CAD
$825 USD
View
Price last confirmed 12 days ago
B
Retailer 3
-
$1,670 CAD
£941 GBP
View
Most Expensive
B
Do Amore Diamonds
27-8E5D63679 · Oct 28
$2,501 CAD
$1,790 USD
View
3 more retailers have this diamond
Prices start from $1,670 CADSave up to $831 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
1.51ct Cushion
$1,670 CAD