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Cushion|Lab Grown|IGI

1.81ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG544271792

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG544271792

Diamond specifications and retailer prices

From €217 EUR
$242 USD
As of October 30, 2026
Save €1,072 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,289 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.81ct lab-grown cushion diamond

This 1.81ct 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 LG544271792 or 544271792. Listed at 14 retailers as of October 29, 2026, with prices from €217 to €1,289, a €1,072 spread on the same certified stone. Brilliant Earth lists it at €1,289. 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

1.81
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544271792
Dimensions7.92 × 6.33 × 4.07 mm
L/W Ratio1.25
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
7.92 mm6.33 mm1.81 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544271792
Side View
Table 61.5%Crown 34.5°Girdle: THK-VTKPavilion 32.7°Culet: NoneDepth 64.3%

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 30
Current: €1,289 EUR|Low: €217 EUR|High: €1,334 EUR|Avg: €594 EUR|-3.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11€217 EUR
Retailer 9€241 EUR
Retailer 7€324 EUR
Retailer 5€391 EUR
Retailer 4€447 EUR
Retailer 3€492 EUR
Retailer 10€546 EUR
Retailer 2€588 EUR
Retailer 6€971 EUR
Retailer 8€1,016 EUR
Brilliant Earth€1,289 EUR

44 data points across 11 retailers

14 retailers€217 EUR to €1,289 EUR

A
Cheapest Retailer
-
€217 EUR
$242 USD
Final sale: no returns
A
Retailer 2
-
€241 EUR
$269 USD
View
B+
Retailer 3
-
€324 EUR
$362 USD
View
A
Retailer 4
-
€391 EUR
View
A
Retailer 5
-
€447 EUR
£393 GBP
View
A
Retailer 6
-
€492 EUR
$550 USD
View
A
Retailer 7
-
€546 EUR
$610 USD
View
A
Retailer 8
-
€557 EUR
$622 USD
View
B+
Retailer 9
-
€588 EUR
$657 USD
View
B
Retailer 10
-
€822 EUR
$918 USD
View
B+
Retailer 11
-
€971 EUR
£854 GBP
View
B
Retailer 12
-
€1,016 EUR
$1,135 USD
View
B
Retailer 13
-
€1,117 EUR
$1,248 USD
View
Most Expensive
B
Brilliant Earth
10789402A · Oct 29
€1,289 EUR
$1,440 USD
View
13 more retailers have this diamond
Prices start from €217 EURSave up to €1,072 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
1.81ct Cushion
€217 EUR