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Cushion|Lab Grown|IGI

1.51ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG799648217

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG799648217

Diamond specifications and retailer prices

From €505 EUR
$564 USD
As of October 31, 2026
Save €2,735 EUR (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €3,240 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG799648217 or 799648217. Listed at 18 retailers as of October 30, 2026, with prices from €505 to €3,240, a €2,735 spread on the same certified stone. Brilliant Earth lists it at €3,240. 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
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799648217
Dimensions8.54 × 5.73 × 3.85 mm
L/W Ratio1.49
Girdle conditionFaceted
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
8.54 mm5.73 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799648217
Side View
Table 63.0%Crown 34.2°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 67.2%

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: €3,240 EUR|Low: €505 EUR|High: €4,332 EUR|Avg: €1,543 EUR|-25.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 4€505 EUR
Retailer 9€613 EUR
Retailer 10€685 EUR
Retailer 3€758 EUR
Retailer 11€843 EUR
Retailer 5€869 EUR
Retailer 2€932 EUR
Retailer 13€962 EUR
Retailer 15€966 EUR
Retailer 6€1,304 EUR
Retailer 17€1,637 EUR
Retailer 7€1,822 EUR
Retailer 16€1,823 EUR
Retailer 14€2,011 EUR
Retailer 12€2,350 EUR
Retailer 8€2,394 EUR
Brilliant Earth€3,240 EUR

28 data points across 17 retailers

18 retailers€505 EUR to €3,240 EUR

A
Cheapest Retailer
-
€505 EUR
$564 USD
Final sale: no returns
Retailer 2
-
€613 EUR
$685 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
€685 EUR
$765 USD
View
A
Retailer 4
-
€758 EUR
$847 USD
View
A
Retailer 5
-
€843 EUR
View
A
Retailer 6
-
€869 EUR
$971 USD
View
A
Retailer 7
-
€932 EUR
£820 GBP
View
A
Retailer 8
-
€962 EUR
ZAR 17,364 ZAR
View
A
Retailer 9
-
€966 EUR
$1,079 USD
View
A
Retailer 10
-
€1,304 EUR
$1,457 USD
View
B+
Retailer 11
-
€1,637 EUR
£1,440 GBP
View
B+
Retailer 12
-
€1,822 EUR
SGD 2,751 SGD
View
B+
Retailer 13
-
€1,823 EUR
$2,036 USD
View
B+
Retailer 14
-
€1,965 EUR
$2,195 USD
View
B+
Retailer 15
-
€2,011 EUR
$2,247 USD
View
B+
Retailer 16
-
€2,350 EUR
£2,067 GBP
View
Retailer 17
-
€2,394 EUR
$2,675 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21420547A · Oct 30
€3,240 EUR
$3,620 USD
View
17 more retailers have this diamond
Prices start from €505 EURSave up to €2,735 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
€505 EUR