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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG567349483

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG567349483

Diamond specifications and retailer prices

From £417 GBP
$555 USD
As of October 28, 2026
Save £1,521 GBP (78%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,938 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct lab-grown cushion diamond

This 1.55ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG567349483 or 567349483. Listed at 7 retailers as of October 28, 2026, with prices from £417 to £1,938, a £1,521 spread on the same certified stone. MOH London lists it at £1,938. 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

1.55
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG567349483
Dimensions6.65 × 6.39 × 4.32 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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
6.65 mm6.39 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG567349483
Side View
Table 59.0%Crown 35.1°Girdle: MED-THKPavilion 34.9°Culet: NoneDepth 67.6%

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: £1,938 GBP|Low: £298 GBP|High: £1,951 GBP|Avg: £825 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5£417 GBP
Retailer 7£433 GBP
Retailer 6£567 GBP
Retailer 3£678 GBP
Retailer 4£719 GBP
Retailer 2£768 GBP
Retailer 8£1,237 GBP
MOH London£1,938 GBP

41 data points across 8 retailers

7 retailers£417 GBP to £1,938 GBP

A
Cheapest Retailer
-
£417 GBP
$555 USD
Final sale: no returns
A
Retailer 2
-
£433 GBP
$576 USD
View
B+
Retailer 3
-
£567 GBP
$755 USD
View
B+
Retailer 4
-
£678 GBP
€860 EUR
View
B+
Retailer 5
-
£719 GBP
$957 USD
View
B
Retailer 6
-
£768 GBP
View
Most Expensive
B
MOH London
LG567349483 · Oct 29
£1,938 GBP
View
6 more retailers have this diamond
Prices start from £417 GBPSave up to £1,521 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
1.55ct Cushion
£417 GBP