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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG557236083

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG557236083

Diamond specifications and retailer prices

From £282 GBP
As of November 6, 2026
Save £1,459 GBP (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,741 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG557236083 or 557236083. Listed at 11 retailers as of November 6, 2026, with prices from £282 to £1,741, a £1,459 spread on the same certified stone. Do Amore Diamonds lists it at £1,741. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557236083
Dimensions6.50 × 6.44 × 4.51 mm
L/W Ratio1.01
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
6.50 mm6.44 mm1.50 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557236083
Side View
Table 60.5%Crown 33°Girdle: THK-VTKPavilion 40.2°Culet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,741 GBP|Low: £178 GBP|High: £1,741 GBP|Avg: £617 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£225 GBP
Retailer 6£282 GBP
Retailer 2£316 GBP
Retailer 10£378 GBP
Retailer 7£468 GBP
Retailer 4£470 GBP
Retailer 11£616 GBP
Retailer 3£789 GBP
Retailer 8£923 GBP
Retailer 5£992 GBP
Do Amore Diamonds£1,741 GBP

35 data points across 11 retailers

11 retailers£282 GBP to £1,741 GBP

Retailer 1
-
£225 GBP
Price last confirmed 12 days ago
B+
Retailer 2
-
£282 GBP
View
B+
Retailer 3
-
£316 GBP
View
B+
Retailer 4
-
£378 GBP
View
B+
Retailer 5
-
£468 GBP
View
B+
Retailer 6
-
£470 GBP
View
B
Retailer 7
-
£616 GBP
View
B
Retailer 8
-
£789 GBP
View
B
Retailer 9
-
£923 GBP
View
C
Retailer 10
-
£992 GBP
View
Most Expensive
C
Do Amore Diamonds
27-8685E21B7 · Nov 6
£1,741 GBP
$2,330 USD
View
10 more retailers have this diamond
Prices start from £282 GBPSave up to £1,459 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.

B+
1.50ct Cushion
£282 GBP