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Cushion|Lab Grown|IGI

1.50ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG665408906

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG665408906

Diamond specifications and retailer prices

From €578 EUR
As of November 4, 2026
Save €3,301 EUR (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €3,879 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665408906 or 665408906. Listed at 20 retailers as of November 4, 2026, with prices from €578 to €3,879, a €3,301 spread on the same certified stone. Brilliant Earth lists it at €3,879. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665408906
Dimensions7.79 × 6.13 × 4.08 mm
L/W Ratio1.27
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
7.79 mm6.13 mm1.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665408906
Side View
Table 62.0%Crown 35.9°Girdle: MED-THKPavilion 37.4°Culet: NoneDepth 66.6%

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 4
Current: €3,879 EUR|Low: €572 EUR|High: €3,879 EUR|Avg: €1,576 EUR|+0.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 5, 2026
Retailer 18€578 EUR
Retailer 6€640 EUR
Retailer 19€754 EUR
Retailer 5€828 EUR
Retailer 4€971 EUR
Retailer 7€983 EUR
Retailer 12€990 EUR
Retailer 14€1,100 EUR
Retailer 15€1,119 EUR
Retailer 13€1,470 EUR
Retailer 17€1,490 EUR
Retailer 10€1,867 EUR
Retailer 11€2,034 EUR
Retailer 9€2,072 EUR
Retailer 16€2,138 EUR
Retailer 8€2,139 EUR
Retailer 3€2,370 EUR
Retailer 2€2,770 EUR
Brilliant Earth€3,879 EUR

39 data points across 19 retailers

20 retailers€578 EUR to €3,879 EUR

A
Cheapest Retailer
-
€578 EUR
Final sale: no returns
Retailer 2
-
€640 EUR
View
Price last confirmed 20 days ago
A
Retailer 3
-
€754 EUR
View
A
Retailer 4
-
€828 EUR
View
A
Retailer 5
-
€971 EUR
View
A
Retailer 6
-
€983 EUR
View
A
Retailer 7
-
€990 EUR
View
A
Retailer 8
-
€1,100 EUR
View
A
Retailer 9
-
€1,119 EUR
View
B+
Retailer 10
-
€1,470 EUR
View
B+
Retailer 11
-
€1,490 EUR
View
B+
Retailer 12
-
€1,867 EUR
View
B+
Retailer 13
-
€2,034 EUR
View
B+
Retailer 14
-
€2,072 EUR
View
B+
Retailer 15
-
€2,138 EUR
View
B
Retailer 16
-
€2,139 EUR
View
B
Retailer 17
-
€2,370 EUR
View
B+
Retailer 18
-
€2,770 EUR
View
B
Retailer 19
-
€2,959 EUR
View
Most Expensive
B
Brilliant Earth
14720158A · Nov 4
€3,879 EUR
$4,370 USD
View
19 more retailers have this diamond
Prices start from €578 EURSave up to €3,301 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
1.50ct Cushion
€578 EUR