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Cushion|Lab Grown|IGI

1.34ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG786601792

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG786601792

Diamond specifications and retailer prices

From €208 EUR
$233 USD
As of November 1, 2026
Save €969 EUR (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,177 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.34ct lab-grown cushion diamond

This 1.34ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG786601792 or 786601792. Listed at 11 retailers as of November 1, 2026, with prices from €208 to €1,177, a €969 spread on the same certified stone. Brilliant Earth lists it at €1,177. 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

1.34
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786601792
Dimensions6.42 × 6.41 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.42 mm6.41 mm1.34 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786601792
Side View
Table 63.0%Crown 37.1°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 66.5%

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: Nov 1
Current: €1,177 EUR|Low: €194 EUR|High: €1,177 EUR|Avg: €587 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9€208 EUR
Retailer 7€339 EUR
Retailer 10€356 EUR
Retailer 4€361 EUR
Retailer 8€439 EUR
Retailer 2€528 EUR
Retailer 5€566 EUR
Retailer 3€697 EUR
Retailer 6€943 EUR
Retailer 11€1,015 EUR
Brilliant Earth€1,177 EUR

44 data points across 11 retailers

11 retailers€208 EUR to €1,177 EUR

A
Cheapest Retailer
-
€208 EUR
$233 USD
Final sale: no returns
A
Retailer 2
-
€339 EUR
View
B+
Retailer 3
-
€356 EUR
$399 USD
View
A
Retailer 4
-
€361 EUR
£319 GBP
View
A
Retailer 5
-
€439 EUR
$492 USD
View
B+
Retailer 6
-
€528 EUR
$592 USD
View
B+
Retailer 7
-
€566 EUR
$635 USD
View
B
Retailer 8
-
€697 EUR
$782 USD
View
B
Retailer 9
-
€943 EUR
£833 GBP
View
B
Retailer 10
-
€1,015 EUR
$1,138 USD
View
Most Expensive
B
Brilliant Earth
21609951A · Nov 2
€1,177 EUR
$1,320 USD
View
10 more retailers have this diamond
Prices start from €208 EURSave up to €969 EUR

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
1.34ct Cushion
€208 EUR