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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 £174 GBP
As of November 6, 2026
Save £676 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £850 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 6, 2026, with prices from £174 to £850, a £676 spread on the same certified stone. Reve Diamonds lists it at £850. 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
Colour
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 6
Current: £284 GBP|Low: £163 GBP|High: £986 GBP|Avg: £491 GBP|+3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 6, 2026
Retailer 9£174 GBP
Retailer 1£284 GBP
Retailer 10£298 GBP
Retailer 3£302 GBP
Retailer 8£368 GBP
Retailer 6£442 GBP
Retailer 7£474 GBP
Retailer 2£583 GBP
Retailer 4£740 GBP
Retailer 5£788 GBP
Reve Diamonds£850 GBP

44 data points across 11 retailers

11 retailers£174 GBP to £850 GBP

A
Cheapest Retailer
-
£174 GBP
Final sale: no returns
A
Retailer 2
-
£284 GBP
View
B+
Retailer 3
-
£298 GBP
View
A
Retailer 4
-
£302 GBP
View
A
Retailer 5
-
£368 GBP
View
B+
Retailer 6
-
£442 GBP
View
B+
Retailer 7
-
£474 GBP
View
B+
Retailer 8
-
£583 GBP
View
B
Retailer 9
-
£740 GBP
View
B
Retailer 10
-
£788 GBP
View
Most Expensive
B
Reve Diamonds
2FD766B8B · Nov 6
£850 GBP
$1,138 USD
View
10 more retailers have this diamond
Prices start from £174 GBPSave up to £676 GBP

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
£174 GBP