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Cushion|Lab Grown|IGI

1.64ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG611385678

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG611385678

Diamond specifications and retailer prices

From €329 EUR
£290 GBP
As of October 27, 2026
Save €1,470 EUR (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €1,799 EUR at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

About this 1.64ct lab-grown cushion diamond

This 1.64ct 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 standard cut grade and certified by IGI LG611385678 or 611385678. Listed at 6 retailers as of October 27, 2026, with prices from €329 to €1,799, a €1,470 spread on the same certified stone. Do Amore Diamonds lists it at €1,799. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.64
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG611385678
Dimensions6.90 × 6.85 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.90 mm6.85 mm1.64 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG611385678
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 66.3%

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 27
Current: €1,799 EUR|Low: €134 EUR|High: €1,817 EUR|Avg: €750 EUR|+6.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 27, 2026
Retailer 7€212 EUR
Retailer 2€329 EUR
Retailer 5€399 EUR
Retailer 10€417 EUR
Retailer 8€491 EUR
Retailer 11€500 EUR
Retailer 3€650 EUR
Retailer 4€1,029 EUR
Retailer 6€1,146 EUR
Retailer 9€1,289 EUR
Do Amore Diamonds€1,799 EUR

30 data points across 11 retailers

6 retailers€329 EUR to €1,799 EUR

A
Cheapest Retailer
-
€329 EUR
£290 GBP
B
Retailer 2
-
€399 EUR
$446 USD
View
B
Retailer 3
-
€1,029 EUR
£905 GBP
View
B
Retailer 4
-
€1,146 EUR
$1,280 USD
View
B
Retailer 5
-
€1,289 EUR
$1,440 USD
View
Most Expensive
C
Do Amore Diamonds
27-974BF901B · Oct 27
€1,799 EUR
$2,010 USD
View
5 more retailers have this diamond
Prices start from €329 EURSave up to €1,470 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
1.64ct Cushion
€329 EUR