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Cushion|Lab Grown|IGI

1.50ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG657466746

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG657466746

Diamond specifications and retailer prices

From £152 GBP
As of November 6, 2026
Save £695 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £847 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.5ct lab-grown cushion diamond

This 1.5ct 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 LG657466746 or 657466746. Listed at 15 retailers as of November 6, 2026, with prices from £152 to £847, a £695 spread on the same certified stone. Reve Diamonds lists it at £847. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657466746
Dimensions8.08 × 5.85 × 3.90 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.08 mm5.85 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657466746
Side View
Table 65.0%Crown 35.5°Girdle: MED-VTKPavilion 36.4°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
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: £276 GBP|Low: £152 GBP|High: £847 GBP|Avg: £454 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Reve Diamonds
November 6, 2026
Retailer 2£152 GBP
Retailer 7£191 GBP
Retailer 13£216 GBP
Retailer 3£233 GBP
Retailer 1£276 GBP
Retailer 8£299 GBP
Retailer 15£344 GBP
Retailer 5£345 GBP
Retailer 11£412 GBP
Retailer 6£551 GBP
Retailer 10£568 GBP
Retailer 4£580 GBP
Retailer 12£680 GBP
Retailer 14£694 GBP
Retailer 9£782 GBP
Reve Diamonds£847 GBP

30 data points across 16 retailers

15 retailers£152 GBP to £847 GBP

A
Cheapest Retailer
-
£152 GBP
Final sale: no returns
A
Retailer 2
-
£191 GBP
View
B+
Retailer 3
-
£233 GBP
View
A
Retailer 4
-
£276 GBP
View
A
Retailer 5
-
£299 GBP
View
A
Retailer 6
-
£344 GBP
View
A
Retailer 7
-
£345 GBP
View
B+
Retailer 8
-
£412 GBP
View
B+
Retailer 9
-
£551 GBP
View
B+
Retailer 10
-
£568 GBP
View
B+
Retailer 11
-
£580 GBP
View
B+
Retailer 12
-
£680 GBP
View
B
Retailer 13
-
£694 GBP
View
B
Retailer 14
-
£782 GBP
View
Most Expensive
B
Reve Diamonds
36585FD7B · Nov 6
£847 GBP
$1,134 USD
View
14 more retailers have this diamond
Prices start from £152 GBPSave up to £695 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
1.50ct Cushion
£152 GBP