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Cushion|Lab Grown|IGI

1.20ct E VS1 Cushion Lab Grown Diamond

ID • E/VS1 • IGI LG589382527

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG589382527

Diamond specifications and retailer prices

From £152 GBP
$202 USD
As of October 28, 2026
Save £700 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £852 GBP at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.2ct lab-grown cushion diamond

This 1.2ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG589382527 or 589382527. Listed at 12 retailers as of October 28, 2026, with prices from £152 to £852, a £700 spread on the same certified stone. Reve Diamonds lists it at £852. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589382527
Dimensions6.31 × 6.10 × 4.03 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.31 mm6.10 mm1.20 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589382527
Side View
Table 64.0%Crown 35.6°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 66.1%

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: Oct 28
Current: £305 GBP|Low: £152 GBP|High: £936 GBP|Avg: £453 GBP|+0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
October 29, 2026
Retailer 11£152 GBP
Retailer 5£290 GBP
Retailer 9£299 GBP
Retailer 4£302 GBP
Retailer 1£305 GBP
Retailer 8£321 GBP
Retailer 10£411 GBP
Retailer 6£412 GBP
Retailer 2£584 GBP
Retailer 3£753 GBP
Retailer 7£790 GBP
Reve Diamonds£852 GBP

41 data points across 12 retailers

12 retailers£152 GBP to £852 GBP

A
Cheapest Retailer
-
£152 GBP
$202 USD
Final sale: no returns
A
Retailer 2
-
£290 GBP
ZAR 6,223 ZAR
View
A
Retailer 3
-
£299 GBP
$397 USD
View
A
Retailer 4
-
£302 GBP
View
A
Retailer 5
-
£305 GBP
€386 EUR
View
A
Retailer 6
-
£321 GBP
$426 USD
View
B+
Retailer 7
-
£411 GBP
$546 USD
View
B+
Retailer 8
-
£412 GBP
A$842 AUD
View
B+
Retailer 9
-
£584 GBP
$775 USD
View
B
Retailer 10
-
£753 GBP
$1,000 USD
View
B
Retailer 11
-
£790 GBP
View
Most Expensive
B
Reve Diamonds
126C64865 · Oct 28
£852 GBP
$1,133 USD
View
11 more retailers have this diamond
Prices start from £152 GBPSave up to £700 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
1.20ct Cushion
£152 GBP