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Cushion|Lab Grown|IGI

1.50ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG836616360

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836616360

Diamond specifications and retailer prices

From £337 GBP
As of October 30, 2026
Save £1,810 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,148 GBP at Brilliant Earth · As of October 29, 2026
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 LG836616360 or 836616360. Listed at 16 retailers as of October 29, 2026, with prices from £337 to £2,148, a £1,810 spread on the same certified stone. Brilliant Earth lists it at £2,148. 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
Crown angle35°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836616360
Dimensions8.51 × 5.81 × 3.70 mm
L/W Ratio1.46
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
8.51 mm5.81 mm1.50 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836616360
Side View
Table 61.0%Crown 35°Girdle: STK-THKPavilion 32°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,148 GBP|Low: £336 GBP|High: £2,148 GBP|Avg: £1,009 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
October 30, 2026
Retailer 2£337 GBP
Retailer 15£496 GBP
Retailer 16£517 GBP
Retailer 4£525 GBP
Retailer 14£561 GBP
Retailer 9£587 GBP
Retailer 10£655 GBP
Retailer 12£758 GBP
Retailer 5£767 GBP
Retailer 6£1,081 GBP
Retailer 13£1,141 GBP
Retailer 11£1,284 GBP
Retailer 8£1,354 GBP
Retailer 7£1,798 GBP
Retailer 3£1,798 GBP
Brilliant Earth£2,148 GBP

11 data points across 16 retailers

16 retailers£337 GBP to £2,148 GBP

A
Cheapest Retailer
-
£337 GBP
A
Retailer 2
-
£496 GBP
$660 USD
View
A
Retailer 3
-
£517 GBP
$689 USD
View
A
Retailer 4
-
£525 GBP
$699 USD
View
A
Retailer 5
-
£561 GBP
ZAR 12,076 ZAR
View
A
Retailer 6
-
£587 GBP
View
A
Retailer 7
-
£655 GBP
€831 EUR
View
A
Retailer 8
-
£758 GBP
A$1,553 AUD
View
A
Retailer 9
-
£767 GBP
$1,022 USD
View
B+
Retailer 10
-
£1,081 GBP
$1,440 USD
View
B+
Retailer 11
-
£1,141 GBP
$1,520 USD
View
B+
Retailer 12
-
£1,284 GBP
View
B+
Retailer 13
-
£1,354 GBP
SGD 2,436 SGD
View
B
Retailer 14
-
£1,798 GBP
$2,394 USD
View
Retailer 15
-
£1,798 GBP
$2,395 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
22192118A · Oct 29
£2,148 GBP
$2,860 USD
View
15 more retailers have this diamond
Prices start from £337 GBPSave up to £1,810 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
£337 GBP