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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 $1,242 SGD
$971 USD
As of November 2, 2026
Save $1,821 SGD (59%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,251 SGD 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 2, 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
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $4,251 SGD|Low: $977 SGD|High: $4,301 SGD|Avg: $2,116 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$977 SGD
Retailer 6$1,242 SGD
Retailer 5$1,498 SGD
Retailer 3$1,503 SGD
Retailer 2$1,615 SGD
Retailer 7$3,063 SGD
MOH London$4,251 SGD

39 data points across 7 retailers

7 retailers$1,242 SGD to $3,063 SGD

Retailer 1
-
$977 SGD
$764 USD
Price last confirmed 17 days ago
B
Retailer 2
-
$1,242 SGD
$971 USD
View
B
Retailer 3
-
$1,498 SGD
$1,171 USD
View
B
Retailer 4
-
$1,503 SGD
$1,175 USD
View
B
Retailer 5
-
$1,615 SGD
£994 GBP
View
C
Retailer 6
-
$3,063 SGD
CA$3,326 CAD
View
Most Expensive
MOH London
LG519254388 · Nov 1
$4,251 SGD
£2,617 GBP
View
Price under review
6 more retailers have this diamond
Prices start from $1,242 SGDSave up to $1,821 SGD

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
$1,242 SGD