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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG665408926

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG665408926

Diamond specifications and retailer prices

From €581 EUR
As of November 4, 2026
Save €3,324 EUR (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €3,905 EUR at Brilliant Earth · As of November 4, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665408926 or 665408926. Listed at 20 retailers as of November 4, 2026, with prices from €581 to €3,905, a €3,324 spread on the same certified stone. Brilliant Earth lists it at €3,905. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665408926
Dimensions7.48 × 6.17 × 4.19 mm
L/W Ratio1.21
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
7.48 mm6.17 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665408926
Side View
Table 59.0%Crown 35.9°Girdle: MED-THKPavilion 36.7°Culet: NoneDepth 67.9%

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 4
Current: €3,905 EUR|Low: €575 EUR|High: €3,905 EUR|Avg: €1,607 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 19
November 5, 2026
Retailer 18€581 EUR
Retailer 6€643 EUR
Retailer 19€746 EUR
Retailer 5€832 EUR
Retailer 4€983 EUR
Retailer 7€990 EUR
Retailer 2€996 EUR
Retailer 14€1,106 EUR
Retailer 12€1,126 EUR
Retailer 13€1,480 EUR
Retailer 17€1,500 EUR
Retailer 10€1,880 EUR
Retailer 11€2,048 EUR
Retailer 9€2,084 EUR
Retailer 8€2,150 EUR
Retailer 16€2,151 EUR
Retailer 3€2,374 EUR
Retailer 15€2,795 EUR
Brilliant Earth€3,905 EUR

39 data points across 19 retailers

20 retailers€581 EUR to €3,905 EUR

A
Cheapest Retailer
-
€581 EUR
Final sale: no returns
Retailer 2
-
€643 EUR
View
Price last confirmed 20 days ago
A
Retailer 3
-
€746 EUR
View
A
Retailer 4
-
€832 EUR
View
A
Retailer 5
-
€983 EUR
View
A
Retailer 6
-
€990 EUR
View
A
Retailer 7
-
€996 EUR
View
A
Retailer 8
-
€1,106 EUR
View
A
Retailer 9
-
€1,126 EUR
View
B+
Retailer 10
-
€1,480 EUR
View
B+
Retailer 11
-
€1,500 EUR
View
B+
Retailer 12
-
€1,880 EUR
View
B+
Retailer 13
-
€2,048 EUR
View
B+
Retailer 14
-
€2,084 EUR
View
B+
Retailer 15
-
€2,150 EUR
View
B+
Retailer 16
-
€2,151 EUR
View
B
Retailer 17
-
€2,234 EUR
View
Retailer 18
-
€2,374 EUR
View
Price last confirmed 17 days ago
B+
Retailer 19
-
€2,795 EUR
View
Most Expensive
B
Brilliant Earth
14720055A · Nov 4
€3,905 EUR
$4,400 USD
View
19 more retailers have this diamond
Prices start from €581 EURSave up to €3,324 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
€581 EUR