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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG638415688

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG638415688

Diamond specifications and retailer prices

From €587 EUR
$658 USD
As of November 1, 2026
Save €2,302 EUR (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €2,889 EUR at Brilliant Earth · As of October 30, 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 very-good cut grade and certified by IGI LG638415688 or 638415688. Listed at 19 retailers as of October 30, 2026, with prices from €587 to €2,889, a €2,302 spread on the same certified stone. Brilliant Earth lists it at €2,889. 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

1.51
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638415688
Dimensions6.67 × 6.60 × 4.47 mm
L/W Ratio1.01
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
6.67 mm6.60 mm1.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638415688
Side View
Table 60.0%Crown 36.5°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 67.7%

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: Nov 1
Current: €2,889 EUR|Low: €587 EUR|High: €2,924 EUR|Avg: €1,422 EUR|-1.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 8€587 EUR
Retailer 3€650 EUR
Retailer 11€749 EUR
Retailer 4€838 EUR
Retailer 2€1,016 EUR
Retailer 5€1,083 EUR
Retailer 6€1,117 EUR
Retailer 9€1,513 EUR
Retailer 12€1,965 EUR
Retailer 10€2,175 EUR
Retailer 7€2,821 EUR
Brilliant Earth€2,889 EUR

42 data points across 12 retailers

19 retailers€587 EUR to €2,889 EUR

A
Cheapest Retailer
-
€587 EUR
$658 USD
Final sale: no returns
Retailer 2
-
€650 EUR
$729 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
€749 EUR
$840 USD
View
A
Retailer 4
-
€838 EUR
$940 USD
View
A
Retailer 5
-
€869 EUR
$975 USD
View
A
Retailer 6
-
€994 EUR
$1,115 USD
View
A
Retailer 7
-
€1,016 EUR
£897 GBP
View
A
Retailer 8
-
€1,083 EUR
View
A
Retailer 9
-
€1,117 EUR
ZAR 20,231 ZAR
View
B+
Retailer 10
-
€1,513 EUR
A$2,611 AUD
View
B
Retailer 11
-
€1,889 EUR
£1,668 GBP
View
B
Retailer 12
-
€1,965 EUR
$2,204 USD
View
B
Retailer 13
-
€2,073 EUR
$2,325 USD
View
B
Retailer 14
-
€2,103 EUR
$2,358 USD
View
B
Retailer 15
-
€2,143 EUR
$2,404 USD
View
Retailer 16
-
€2,175 EUR
$2,440 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
€2,586 EUR
$2,900 USD
View
B
Retailer 18
-
€2,821 EUR
£2,491 GBP
View
Most Expensive
B
Brilliant Earth
12444282A · Oct 30
€2,889 EUR
$3,240 USD
View
18 more retailers have this diamond
Prices start from €587 EURSave up to €2,302 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
€587 EUR