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Cushion|Lab Grown|IGI

1.81ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG544271792

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG544271792

Diamond specifications and retailer prices

From $309 SGD
$242 USD
As of October 30, 2026
Save $1,532 SGD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,841 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG544271792 or 544271792. Listed at 14 retailers as of October 29, 2026, with prices from $309 to $1,841, a $1,532 spread on the same certified stone. Brilliant Earth lists it at $1,841. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.81
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle32.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544271792
Dimensions7.92 × 6.33 × 4.07 mm
L/W Ratio1.25
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
7.92 mm6.33 mm1.81 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544271792
Side View
Table 61.5%Crown 34.5°Girdle: THK-VTKPavilion 32.7°Culet: NoneDepth 64.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,841 SGD|Low: $309 SGD|High: $1,905 SGD|Avg: $849 SGD|-3.4%
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 11$309 SGD
Retailer 9$344 SGD
Retailer 6$463 SGD
Retailer 4$558 SGD
Retailer 2$638 SGD
Retailer 3$703 SGD
Retailer 10$780 SGD
Retailer 8$888 SGD
Retailer 5$1,387 SGD
Retailer 7$1,451 SGD
Brilliant Earth$1,841 SGD

44 data points across 11 retailers

14 retailers$309 SGD to $1,841 SGD

A
Cheapest Retailer
-
$309 SGD
$242 USD
Final sale: no returns
A
Retailer 2
-
$344 SGD
$269 USD
View
B+
Retailer 3
-
$463 SGD
$362 USD
View
A
Retailer 4
-
$558 SGD
€416 EUR
View
A
Retailer 5
-
$638 SGD
£393 GBP
View
A
Retailer 6
-
$703 SGD
$550 USD
View
A
Retailer 7
-
$780 SGD
$610 USD
View
A
Retailer 8
-
$795 SGD
$622 USD
View
B+
Retailer 9
-
$888 SGD
$695 USD
View
B
Retailer 10
-
$1,173 SGD
$918 USD
View
B+
Retailer 11
-
$1,387 SGD
£854 GBP
View
B
Retailer 12
-
$1,451 SGD
$1,135 USD
View
B
Retailer 13
-
$1,595 SGD
$1,248 USD
View
Most Expensive
B
Brilliant Earth
10789402A · Oct 29
$1,841 SGD
$1,440 USD
View
13 more retailers have this diamond
Prices start from $309 SGDSave up to $1,532 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
1.81ct Cushion
$309 SGD