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Cushion|Lab Grown|IGI

1.50ct E FL Cushion Lab Grown Diamond

GD • E/FL • IGI LG818683531

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818683531

Diamond specifications and retailer prices

From $1,116 SGD
HK$6,800 HKD
As of October 30, 2026
Save $3,768 SGD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,883 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG818683531 or 818683531. Listed at 11 retailers as of October 29, 2026, with prices from $1,116 to $4,883, a $3,768 spread on the same certified stone. Brilliant Earth lists it at $4,883. 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
E
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818683531
Dimensions7.72 × 6.13 × 3.94 mm
L/W Ratio1.26
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
7.72 mm6.13 mm1.50 ctE / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818683531
Side View
Table 62.0%Crown 37.8°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 64.3%

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 30
Current: $4,883 SGD|Low: $1,116 SGD|High: $5,997 SGD|Avg: $2,764 SGD|-0.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 6$1,116 SGD
Retailer 10$1,361 SGD
Retailer 9$1,423 SGD
Retailer 4$1,484 SGD
Retailer 2$1,508 SGD
Retailer 8$2,284 SGD
Retailer 7$3,115 SGD
Retailer 3$3,371 SGD
Retailer 5$4,206 SGD
Retailer 11$4,497 SGD
Brilliant Earth$4,883 SGD

32 data points across 11 retailers

11 retailers$1,116 SGD to $4,883 SGD

A
Cheapest Retailer
-
$1,116 SGD
HK$6,800 HKD
A
Retailer 2
-
$1,361 SGD
$1,062 USD
View
A
Retailer 3
-
$1,423 SGD
$1,110 USD
View
A
Retailer 4
-
$1,484 SGD
€1,103 EUR
View
A
Retailer 5
-
$1,508 SGD
£927 GBP
View
B+
Retailer 6
-
$2,284 SGD
$1,782 USD
View
B
Retailer 7
-
$3,115 SGD
$2,431 USD
View
Retailer 8
-
$3,371 SGD
$2,630 USD
View
Price last confirmed 31 days ago
B
Retailer 9
-
$4,206 SGD
£2,584 GBP
View
B
Retailer 10
-
$4,497 SGD
$3,509 USD
View
Most Expensive
B
Brilliant Earth
21582178A · Oct 29
$4,883 SGD
$3,810 USD
View
10 more retailers have this diamond
Prices start from $1,116 SGDSave up to $3,768 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.

A
1.50ct Cushion
$1,116 SGD