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Cushion|Lab Grown|IGI

1.55ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG591369468

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG591369468

Diamond specifications and retailer prices

From €176 EUR
$197 USD
As of November 1, 2026
Save €1,336 EUR (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,513 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG591369468 or 591369468. Listed at 14 retailers as of October 31, 2026, with prices from €176 to €1,513, a €1,336 spread on the same certified stone. Do Amore Diamonds lists it at €1,513. 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
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591369468
Dimensions7.37 × 6.35 × 4.35 mm
L/W Ratio1.16
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
7.37 mm6.35 mm1.55 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591369468
Side View
Table 63.0%Crown 36.5°Girdle: THN-STKPavilion 39.4°Culet: NoneDepth 68.5%

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: Nov 1
Current: €1,007 EUR|Low: €176 EUR|High: €1,629 EUR|Avg: €713 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7€176 EUR
Retailer 4€353 EUR
Retailer 2€390 EUR
Retailer 8€497 EUR
Retailer 5€809 EUR
Retailer 1€1,007 EUR
Retailer 6€1,155 EUR
Retailer 3€1,378 EUR

43 data points across 8 retailers

14 retailers€176 EUR to €1,513 EUR

A
Cheapest Retailer
-
€176 EUR
$197 USD
Final sale: no returns
B+
Retailer 2
-
€263 EUR
$294 USD
View
A
Retailer 3
-
€326 EUR
$364 USD
View
A
Retailer 4
-
€353 EUR
View
A
Retailer 5
-
€390 EUR
£343 GBP
View
B+
Retailer 6
-
€497 EUR
$555 USD
View
B+
Retailer 7
-
€737 EUR
$823 USD
View
B+
Retailer 8
-
€809 EUR
$904 USD
View
B
Retailer 9
-
€1,007 EUR
£886 GBP
View
B
Retailer 10
-
€1,137 EUR
$1,270 USD
View
B
Retailer 11
-
€1,137 EUR
$1,270 USD
View
B
Retailer 12
-
€1,155 EUR
$1,290 USD
View
B
Retailer 13
-
€1,378 EUR
$1,540 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 31
€1,513 EUR
$1,690 USD
View
13 more retailers have this diamond
Prices start from €176 EURSave up to €1,336 EUR

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
€176 EUR