Cushion|Lab Grown|IGI

1.50ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG729579223

Certificate IGI LG729579223

Diamond specifications and retailer prices

From £2,320 GBP
$3,090 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £2,320 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729579223 or 729579223. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG729579223
Dimensions8.29 × 6.15 × 3.97 mm
L/W Ratio1.35
Top View
8.29 mm6.15 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729579223
Side View
Table 60.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £2,320 GBP|Low: £1,563 GBP|High: £2,808 GBP|Avg: £2,424 GBP|-13.2%
Brilliant Earth
Retailer 2
Retailer 3
April 14, 2026
Retailer 3£1,563 GBP
Brilliant Earth£2,320 GBP
Retailer 2£2,808 GBP

9 data points across 3 retailers

1 retailer

B+
Brilliant Earth
15907904Y · Oct 29
£2,320 GBP
$3,090 USD
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B+
1.50ct Cushion
£2,320 GBP