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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG770641066

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG770641066

Diamond specifications and retailer prices

From €372 EUR
$417 USD
As of November 1, 2026
Save €1,804 EUR (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,175 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG770641066 or 770641066. Listed at 19 retailers as of November 1, 2026, with prices from €372 to €2,175, a €1,804 spread on the same certified stone. Brilliant Earth lists it at €2,175. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770641066
Dimensions7.11 × 6.87 × 4.30 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.11 mm6.87 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770641066
Side View
Table 56.0%Crown 38.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.6%

Caratlytics Score

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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: Nov 1
Current: €2,175 EUR|Low: €368 EUR|High: €3,103 EUR|Avg: €1,109 EUR|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 16€372 EUR
Retailer 6€413 EUR
Retailer 11€425 EUR
Retailer 17€513 EUR
Retailer 5€638 EUR
Retailer 7€659 EUR
Retailer 12€712 EUR
Retailer 2€746 EUR
Retailer 14€753 EUR
Retailer 4€929 EUR
Retailer 10€1,047 EUR
Retailer 9€1,362 EUR
Retailer 8€1,557 EUR
Retailer 15€1,558 EUR
Retailer 13€1,612 EUR
Retailer 3€2,091 EUR
Brilliant Earth€2,175 EUR

34 data points across 17 retailers

19 retailers€372 EUR to €2,175 EUR

A
Cheapest Retailer
-
€372 EUR
$417 USD
Final sale: no returns
Retailer 2
-
€413 EUR
$463 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
€425 EUR
£375 GBP
View
A
Retailer 4
-
€513 EUR
$575 USD
View
A
Retailer 5
-
€638 EUR
$716 USD
View
A
Retailer 6
-
€659 EUR
$739 USD
View
A
Retailer 7
-
€712 EUR
ZAR 12,898 ZAR
View
A
Retailer 8
-
€746 EUR
£659 GBP
View
A
Retailer 9
-
€753 EUR
View
A
Retailer 10
-
€929 EUR
$1,042 USD
View
A
Retailer 11
-
€1,047 EUR
$1,174 USD
View
B+
Retailer 12
-
€1,362 EUR
$1,527 USD
View
B+
Retailer 13
-
€1,391 EUR
$1,560 USD
View
B+
Retailer 14
-
€1,510 EUR
$1,694 USD
View
B+
Retailer 15
-
€1,557 EUR
$1,747 USD
View
B+
Retailer 16
-
€1,558 EUR
$1,748 USD
View
B+
Retailer 17
-
€1,612 EUR
£1,424 GBP
View
Retailer 18
-
€2,091 EUR
$2,345 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20258573A · Nov 2
€2,175 EUR
$2,440 USD
View
18 more retailers have this diamond
Prices start from €372 EURSave up to €1,804 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
1.51ct Cushion
€372 EUR