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Cushion|Lab Grown|IGI

1.81ct D SI2 Cushion Lab Grown Diamond

VG • D/SI2 • IGI LG515211459

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG515211459

Diamond specifications and retailer prices

From $891 SGD
As of November 6, 2026
Save $2,540 SGD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,431 SGD at MOH London · As of November 7, 2026
View at MOH London

About this 1.81ct lab-grown cushion diamond

This 1.81ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG515211459 or 515211459. Listed at 7 retailers as of November 6, 2026, with prices from $891 to $3,431, a $2,540 spread on the same certified stone. MOH London lists it at $3,431. 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

1.81
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515211459
Dimensions7.83 × 6.30 × 4.41 mm
L/W Ratio1.24
Girdle conditionFaceted
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
7.83 mm6.30 mm1.81 ctD / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515211459
Side View
Table 64.0%Crown 40.4°Girdle: STK-VTKPavilion 33°Culet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,431 SGD|Low: $891 SGD|High: $3,491 SGD|Avg: $1,603 SGD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7$891 SGD
Retailer 4$1,198 SGD
Retailer 3$1,268 SGD
Retailer 6$1,280 SGD
Retailer 5$1,487 SGD
Retailer 2$1,584 SGD
MOH London$3,431 SGD

44 data points across 7 retailers

7 retailers$891 SGD to $3,431 SGD

B+
Cheapest Retailer
-
$891 SGD
B+
Retailer 2
-
$1,198 SGD
View
B
Retailer 3
-
$1,268 SGD
View
B+
Retailer 4
-
$1,280 SGD
View
B
Retailer 5
-
$1,487 SGD
View
B
Retailer 6
-
$1,584 SGD
View
Most Expensive
B
MOH London
LG515211459 · Nov 7
$3,431 SGD
£2,108 GBP
View
6 more retailers have this diamond
Prices start from $891 SGDSave up to $2,540 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+
1.81ct Cushion
$891 SGD