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Cushion|Lab Grown|IGI

1.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG836617524

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836617524

Diamond specifications and retailer prices

From $438 USD
As of October 25, 2026
Save $2,452 USD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,890 USD at Brilliant Earth · As of October 29, 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 LG836617524 or 836617524. Listed at 17 retailers as of October 25, 2026, with prices from $438 to $2,890, a $2,452 spread on the same certified stone. Brilliant Earth lists it at $2,890. 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
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836617524
Dimensions8.56 × 5.78 × 3.84 mm
L/W Ratio1.48
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
8.56 mm5.78 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836617524
Side View
Table 62.0%Crown 34.2°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 66.4%

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: Oct 25
Current: $2,890 USD|Low: $438 USD|High: $2,890 USD|Avg: $1,294 USD
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 29, 2026
Retailer 5$438 USD
Retailer 17$453 USD
Retailer 15$660 USD
Retailer 6$692 USD
Retailer 4$702 USD
Retailer 14$752 USD
Retailer 2$787 USD
Retailer 10$879 USD
Retailer 12$1,016 USD
Retailer 3$1,034 USD
Retailer 7$1,448 USD
Retailer 11$1,720 USD
Retailer 9$1,814 USD
Retailer 13$2,008 USD
Retailer 16$2,395 USD
Retailer 8$2,406 USD
Brilliant Earth$2,890 USD

20 data points across 17 retailers

17 retailers$438 USD to $2,890 USD

A
Cheapest Retailer
-
$438 USD
Retailer 2
-
$453 USD
£357 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
$660 USD
View
A
Retailer 4
-
$692 USD
View
A
Retailer 5
-
$702 USD
View
A
Retailer 6
-
$752 USD
ZAR 12,150 ZAR
View
A
Retailer 7
-
$787 USD
£620 GBP
View
A
Retailer 8
-
$879 USD
€837 EUR
View
A
Retailer 9
-
$1,016 USD
A$1,563 AUD
View
A
Retailer 10
-
$1,034 USD
View
B+
Retailer 11
-
$1,448 USD
View
B+
Retailer 12
-
$1,720 USD
£1,354 GBP
View
B+
Retailer 13
-
$1,814 USD
SGD 2,452 SGD
View
B+
Retailer 14
-
$2,008 USD
View
Retailer 15
-
$2,395 USD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$2,406 USD
View
Most Expensive
B
Brilliant Earth
21738552A · Oct 29
$2,890 USD
View
16 more retailers have this diamond
Prices start from $438 USDSave up to $2,452 USD

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
$438 USD