Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG541253650

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG541253650

Diamond specifications and retailer prices

From $253 USD
As of November 6, 2026
Save $1,025 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,278 USD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG541253650 or 541253650. Listed at 11 retailers as of November 6, 2026, with prices from $253 to $1,278, a $1,025 spread on the same certified stone. Reve Diamonds lists it at $1,278. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541253650
Dimensions8.09 × 5.78 × 3.97 mm
L/W Ratio1.40
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
8.09 mm5.78 mm1.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541253650
Side View
Table 61.0%Crown 32.8°Girdle: MED-THKPavilion 37.9°Culet: NoneDepth 68.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $449 USD|Low: $252 USD|High: $1,278 USD|Avg: $593 USD|+10.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
November 6, 2026
Retailer 10$253 USD
Retailer 2$281 USD
Retailer 3$357 USD
Retailer 7$378 USD
Retailer 1$449 USD
Retailer 9$463 USD
Retailer 4$518 USD
Retailer 6$533 USD
Retailer 8$954 USD
Retailer 5$1,121 USD
Reve Diamonds$1,278 USD

41 data points across 11 retailers

11 retailers$253 USD to $1,278 USD

A
Cheapest Retailer
-
$253 USD
Final sale: no returns
Retailer 2
-
$281 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$357 USD
View
B+
Retailer 4
-
$378 USD
View
A
Retailer 5
-
$449 USD
View
A
Retailer 6
-
$463 USD
View
B+
Retailer 7
-
$518 USD
View
B+
Retailer 8
-
$533 USD
View
B
Retailer 9
-
$954 USD
View
B
Retailer 10
-
$1,121 USD
View
Most Expensive
B
Reve Diamonds
1DAE62A6A · Nov 6
$1,278 USD
View
10 more retailers have this diamond
Prices start from $253 USDSave up to $1,025 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
$253 USD