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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 €177 EUR
$197 USD
As of October 30, 2026
Save €1,341 EUR (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,518 EUR at Do Amore Diamonds · As of October 29, 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 29, 2026, with prices from €177 to €1,518, a €1,341 spread on the same certified stone. Do Amore Diamonds lists it at €1,518. 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 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €395 EUR|Low: €177 EUR|High: €1,635 EUR|Avg: €665 EUR|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7€177 EUR
Retailer 9€264 EUR
Retailer 2€357 EUR
Retailer 1€395 EUR
Retailer 8€499 EUR
Retailer 5€812 EUR
Retailer 3€1,017 EUR
Retailer 6€1,159 EUR
Retailer 4€1,240 EUR

42 data points across 9 retailers

14 retailers€177 EUR to €1,518 EUR

A
Cheapest Retailer
-
€177 EUR
$197 USD
Final sale: no returns
B+
Retailer 2
-
€264 EUR
$294 USD
View
A
Retailer 3
-
€327 EUR
$364 USD
View
A
Retailer 4
-
€357 EUR
View
A
Retailer 5
-
€395 EUR
£346 GBP
View
B+
Retailer 6
-
€499 EUR
$555 USD
View
B+
Retailer 7
-
€740 EUR
$823 USD
View
B+
Retailer 8
-
€812 EUR
$904 USD
View
B
Retailer 9
-
€1,017 EUR
£891 GBP
View
B
Retailer 10
-
€1,141 EUR
$1,270 USD
View
B
Retailer 11
-
€1,141 EUR
$1,270 USD
View
B
Retailer 12
-
€1,159 EUR
$1,290 USD
View
B
Retailer 13
-
€1,240 EUR
$1,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-7C1DA9D49 · Oct 29
€1,518 EUR
$1,690 USD
View
13 more retailers have this diamond
Prices start from €177 EURSave up to €1,341 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
€177 EUR