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Cushion|Lab Grown|IGI

1.55ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG674547147

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG674547147

Diamond specifications and retailer prices

From €201 EUR
$225 USD
As of November 1, 2026
Save €868 EUR (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,069 EUR at Reve Diamonds · As of November 1, 2026
View at Reve 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG674547147 or 674547147. Listed at 15 retailers as of November 1, 2026, with prices from €201 to €1,069, a €868 spread on the same certified stone. Reve Diamonds lists it at €1,069. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle42°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674547147
Dimensions6.81 × 6.48 × 4.48 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.48 mm1.55 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674547147
Side View
Table 62.0%Crown 36.1°Girdle: MED-STKPavilion 42°Culet: NoneDepth 69.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: €582 EUR|Low: €201 EUR|High: €1,054 EUR|Avg: €542 EUR|+12.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7€201 EUR
Retailer 9€251 EUR
Retailer 3€285 EUR
Retailer 2€317 EUR
Retailer 5€364 EUR
Retailer 4€409 EUR
Retailer 1€582 EUR
Retailer 10€856 EUR
Retailer 6€865 EUR
Retailer 8€1,047 EUR

39 data points across 10 retailers

15 retailers€201 EUR to €1,069 EUR

A
Cheapest Retailer
-
€201 EUR
$225 USD
Final sale: no returns
A
Retailer 2
-
€251 EUR
HK$2,200 HKD
View
A
Retailer 3
-
€285 EUR
£252 GBP
View
B+
Retailer 4
-
€317 EUR
$355 USD
View
A
Retailer 5
-
€364 EUR
View
A
Retailer 6
-
€409 EUR
£361 GBP
View
A
Retailer 7
-
€442 EUR
$496 USD
View
Retailer 8
-
€582 EUR
$653 USD
View
B+
Retailer 9
-
€726 EUR
SGD 1,100 SGD
View
B+
Retailer 10
-
€764 EUR
$857 USD
View
B+
Retailer 11
-
€856 EUR
$960 USD
View
B+
Retailer 12
-
€865 EUR
$970 USD
View
B
Retailer 13
-
€963 EUR
$1,080 USD
View
B
Retailer 14
-
€1,047 EUR
£925 GBP
View
Most Expensive
B
Reve Diamonds
EF5D41078 · Nov 1
€1,069 EUR
$1,199 USD
View
14 more retailers have this diamond
Prices start from €201 EURSave up to €868 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
€201 EUR