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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 €373 EUR
$417 USD
As of October 31, 2026
Save €1,811 EUR (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,184 EUR at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from €373 to €2,184, a €1,811 spread on the same certified stone. Brilliant Earth lists it at €2,184. 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
Color
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: Oct 31
Current: €2,184 EUR|Low: €370 EUR|High: €3,115 EUR|Avg: €1,110 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
October 31, 2026
Retailer 11€373 EUR
Retailer 5€414 EUR
Retailer 13€428 EUR
Retailer 16€515 EUR
Retailer 4€641 EUR
Retailer 7€661 EUR
Retailer 15€712 EUR
Retailer 12€749 EUR
Retailer 2€756 EUR
Retailer 3€933 EUR
Retailer 6€1,038 EUR
Retailer 9€1,367 EUR
Retailer 8€1,564 EUR
Retailer 10€1,565 EUR
Retailer 14€1,628 EUR
Retailer 17€2,099 EUR
Brilliant Earth€2,184 EUR

34 data points across 17 retailers

19 retailers€373 EUR to €2,184 EUR

A
Cheapest Retailer
-
€373 EUR
$417 USD
Final sale: no returns
A
Retailer 2
-
€414 EUR
$463 USD
View
A
Retailer 3
-
€428 EUR
£376 GBP
View
A
Retailer 4
-
€515 EUR
$575 USD
View
A
Retailer 5
-
€641 EUR
$716 USD
View
A
Retailer 6
-
€661 EUR
$739 USD
View
A
Retailer 7
-
€712 EUR
ZAR 12,852 ZAR
View
A
Retailer 8
-
€749 EUR
£659 GBP
View
A
Retailer 9
-
€756 EUR
View
A
Retailer 10
-
€933 EUR
$1,042 USD
View
A
Retailer 11
-
€1,038 EUR
$1,160 USD
View
B+
Retailer 12
-
€1,367 EUR
$1,527 USD
View
B+
Retailer 13
-
€1,396 EUR
$1,560 USD
View
B+
Retailer 14
-
€1,516 EUR
$1,694 USD
View
B+
Retailer 15
-
€1,564 EUR
$1,747 USD
View
B+
Retailer 16
-
€1,565 EUR
$1,748 USD
View
B+
Retailer 17
-
€1,628 EUR
£1,432 GBP
View
Retailer 18
-
€2,099 EUR
$2,345 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
20258573A · Oct 31
€2,184 EUR
$2,440 USD
View
18 more retailers have this diamond
Prices start from €373 EURSave up to €1,811 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
€373 EUR