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Cushion|Lab Grown|IGI

1.50ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG519254388

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG519254388

Diamond specifications and retailer prices

From $971 USD
As of November 6, 2026
Save $1,424 USD (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,324 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG519254388 or 519254388. Listed at 7 retailers as of November 5, 2026, with a 147% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle42.6°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519254388
Dimensions6.75 × 5.94 × 4.04 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeSmall Natural
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process.
Top View
6.75 mm5.94 mm1.50 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG519254388
Side View
Table 66.0%Crown 42.6°Girdle: VTK-ETKPavilion 34.6°Culet: SmallDepth 68.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $3,324 USD|Low: $764 USD|High: $3,363 USD|Avg: $1,653 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$764 USD
Retailer 6$971 USD
Retailer 2$1,159 USD
Retailer 4$1,175 USD
Retailer 3$1,250 USD
Retailer 7$2,395 USD
MOH London$3,324 USD

41 data points across 7 retailers

7 retailers$971 USD to $2,395 USD

Retailer 1
-
$764 USD
Price last confirmed 22 days ago
B
Retailer 2
-
$971 USD
View
B
Retailer 3
-
$1,159 USD
View
B
Retailer 4
-
$1,175 USD
View
B
Retailer 5
-
$1,250 USD
View
C
Retailer 6
-
$2,395 USD
View
Most Expensive
MOH London
LG519254388 · Nov 1
$3,324 USD
£2,617 GBP
View
Price under review
6 more retailers have this diamond
Prices start from $971 USDSave up to $1,424 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.

B
1.50ct Cushion
$971 USD