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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 $1,012 AUD
As of November 6, 2026
Save $2,885 AUD (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,896 AUD 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 $1,012 to $3,896, a $2,885 spread on the same certified stone. MOH London lists it at $3,896. 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: $3,896 AUD|Low: $1,012 AUD|High: $3,965 AUD|Avg: $1,821 AUD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7$1,012 AUD
Retailer 4$1,361 AUD
Retailer 3$1,439 AUD
Retailer 6$1,454 AUD
Retailer 5$1,688 AUD
Retailer 2$1,799 AUD
MOH London$3,896 AUD

44 data points across 7 retailers

7 retailers$1,012 AUD to $3,896 AUD

B+
Cheapest Retailer
-
$1,012 AUD
B+
Retailer 2
-
$1,361 AUD
View
B
Retailer 3
-
$1,439 AUD
View
B+
Retailer 4
-
$1,454 AUD
View
B
Retailer 5
-
$1,688 AUD
View
B
Retailer 6
-
$1,799 AUD
View
Most Expensive
B
MOH London
LG515211459 · Nov 7
$3,896 AUD
£2,108 GBP
View
6 more retailers have this diamond
Prices start from $1,012 AUDSave up to $2,885 AUD

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
$1,012 AUD