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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 HK$1,899 HKD
$242 USD
As of October 30, 2026
Save HK$9,399 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$11,298 HKD 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 HK$1,899 to HK$11,298, a HK$9,399 spread on the same certified stone. Brilliant Earth lists it at HK$11,298. 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: HK$11,298 HKD|Low: HK$1,899 HKD|High: HK$11,690 HKD|Avg: HK$5,207 HKD|-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 11HK$1,899 HKD
Retailer 9HK$2,110 HKD
Retailer 6HK$2,840 HKD
Retailer 4HK$3,427 HKD
Retailer 2HK$3,917 HKD
Retailer 3HK$4,311 HKD
Retailer 10HK$4,786 HKD
Retailer 8HK$5,453 HKD
Retailer 5HK$8,509 HKD
Retailer 7HK$8,905 HKD
Brilliant EarthHK$11,298 HKD

43 data points across 11 retailers

14 retailersHK$1,899 HKD to HK$11,298 HKD

A
Cheapest Retailer
-
HK$1,899 HKD
$242 USD
Final sale: no returns
A
Retailer 2
-
HK$2,110 HKD
$269 USD
View
B+
Retailer 3
-
HK$2,840 HKD
$362 USD
View
A
Retailer 4
-
HK$3,427 HKD
€416 EUR
View
A
Retailer 5
-
HK$3,917 HKD
£393 GBP
View
A
Retailer 6
-
HK$4,311 HKD
$550 USD
View
A
Retailer 7
-
HK$4,786 HKD
$610 USD
View
A
Retailer 8
-
HK$4,880 HKD
$622 USD
View
B+
Retailer 9
-
HK$5,453 HKD
$695 USD
View
B
Retailer 10
-
HK$7,201 HKD
$918 USD
View
B+
Retailer 11
-
HK$8,509 HKD
£854 GBP
View
B
Retailer 12
-
HK$8,905 HKD
$1,135 USD
View
B
Retailer 13
-
HK$9,790 HKD
$1,248 USD
View
Most Expensive
B
Brilliant Earth
10789402A · Oct 29
HK$11,298 HKD
$1,440 USD
View
13 more retailers have this diamond
Prices start from HK$1,899 HKDSave up to HK$9,399 HKD

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
HK$1,899 HKD