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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG816683635

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816683635

Diamond specifications and retailer prices

From €352 EUR
$395 USD
As of November 1, 2026
Save €1,823 EUR (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €2,175 EUR at Brilliant Earth · As of November 2, 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 LG816683635 or 816683635. Listed at 20 retailers as of November 1, 2026, with prices from €352 to €2,175, a €1,823 spread on the same certified stone. Brilliant Earth lists it at €2,175. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816683635
Dimensions8.09 × 5.81 × 3.84 mm
L/W Ratio1.39
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
8.09 mm5.81 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816683635
Side View
Table 57.0%Crown 32.7°Girdle: STK-THKPavilion 33.9°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,175 EUR|Low: €352 EUR|High: €3,103 EUR|Avg: €1,058 EUR|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 3, 2026
Retailer 6€352 EUR
Retailer 7€391 EUR
Retailer 16€402 EUR
Retailer 19€526 EUR
Retailer 12€611 EUR
Retailer 9€617 EUR
Retailer 18€620 EUR
Retailer 17€673 EUR
Retailer 2€702 EUR
Retailer 20€906 EUR
Retailer 8€922 EUR
Retailer 15€981 EUR
Retailer 10€1,291 EUR
Retailer 11€1,383 EUR
Retailer 5€1,446 EUR
Retailer 14€1,474 EUR
Retailer 4€1,499 EUR
Retailer 13€1,524 EUR
Retailer 3€2,086 EUR
Brilliant Earth€2,175 EUR

36 data points across 20 retailers

20 retailers€352 EUR to €2,175 EUR

A
Cheapest Retailer
-
€352 EUR
$395 USD
Final sale: no returns
Retailer 2
-
€391 EUR
$438 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
€402 EUR
£355 GBP
View
A
Retailer 4
-
€526 EUR
$590 USD
View
A
Retailer 5
-
€611 EUR
$685 USD
View
A
Retailer 6
-
€617 EUR
$692 USD
View
A
Retailer 7
-
€620 EUR
View
A
Retailer 8
-
€673 EUR
ZAR 12,192 ZAR
View
A
Retailer 9
-
€702 EUR
£620 GBP
View
A
Retailer 10
-
€906 EUR
A$1,563 AUD
View
A
Retailer 11
-
€922 EUR
$1,034 USD
View
A
Retailer 12
-
€981 EUR
$1,100 USD
View
B+
Retailer 13
-
€1,291 EUR
$1,448 USD
View
Retailer 14
-
€1,383 EUR
A$2,387 AUD
View
Price last confirmed 26 days ago
B+
Retailer 15
-
€1,446 EUR
SGD 2,192 SGD
View
B+
Retailer 16
-
€1,474 EUR
$1,653 USD
View
B+
Retailer 17
-
€1,499 EUR
$1,682 USD
View
B+
Retailer 18
-
€1,524 EUR
£1,346 GBP
View
Retailer 19
-
€2,086 EUR
$2,340 USD
View
Price last confirmed 12 days ago
Most Expensive
B+
Brilliant Earth
22183635A · Nov 2
€2,175 EUR
$2,440 USD
View
19 more retailers have this diamond
Prices start from €352 EURSave up to €1,823 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
€352 EUR