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Cushion|Lab Grown|IGI

1.55ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG797698759

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG797698759

Diamond specifications and retailer prices

From £383 GBP
$510 USD
As of October 29, 2026
Save £773 GBP (67%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,156 GBP at With Clarity · As of October 30, 2026
View at With Clarity

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG797698759 or 797698759. Listed at 10 retailers as of October 29, 2026, with prices from £383 to £1,156, a £773 spread on the same certified stone. With Clarity lists it at £1,156. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797698759
Dimensions8.57 × 5.89 × 3.98 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.57 mm5.89 mm1.55 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797698759
Side View
Table 59.0%Crown 34.6°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 67.6%

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 29
Current: £438 GBP|Low: £275 GBP|High: £1,319 GBP|Avg: £877 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
October 29, 2026
Retailer 7£275 GBP
Retailer 6£383 GBP
Retailer 1£438 GBP
Retailer 9£519 GBP
Retailer 11£595 GBP
Retailer 5£618 GBP
Retailer 8£950 GBP
Retailer 4£1,071 GBP
Retailer 3£1,077 GBP
Retailer 10£1,105 GBP
With Clarity£1,156 GBP
Retailer 2£1,319 GBP

22 data points across 12 retailers

10 retailers£383 GBP to £1,156 GBP

Retailer 1
-
£275 GBP
Price last confirmed 13 days ago
A
Retailer 2
-
£383 GBP
$510 USD
View
A
Retailer 3
-
£438 GBP
€555 EUR
View
A
Retailer 4
-
£519 GBP
$691 USD
View
A
Retailer 5
-
£618 GBP
A$1,266 AUD
View
A
Retailer 6
-
£950 GBP
$1,265 USD
View
B+
Retailer 7
-
£1,059 GBP
$1,410 USD
View
A
Retailer 8
-
£1,071 GBP
View
Retailer 9
-
£1,105 GBP
SGD 1,988 SGD
View
Price last confirmed 18 days ago
Most Expensive
B+
With Clarity
797698759 · Oct 30
£1,156 GBP
$1,539 USD
View
9 more retailers have this diamond
Prices start from £383 GBPSave up to £773 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
£383 GBP