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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG750578543

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG750578543

Diamond specifications and retailer prices

From $410 SGD
$321 USD
As of October 30, 2026
Save $254 SGD (38%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,231 SGD at MOH London · As of October 25, 2026
View at MOH London

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG750578543 or 750578543. Listed at 7 retailers as of October 30, 2026, with a 62% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750578543
Dimensions5.80 × 5.63 × 3.67 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeNone
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
5.80 mm5.63 mm1.00 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750578543
Side View
Table 60.0%Crown 37.6°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,231 SGD|Low: $410 SGD|High: $1,231 SGD|Avg: $609 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$410 SGD
Retailer 3$444 SGD
Retailer 2$460 SGD
Retailer 5$468 SGD
Retailer 6$494 SGD
Retailer 9$653 SGD
Retailer 4$665 SGD
Retailer 8$697 SGD
MOH London$1,231 SGD

10 data points across 9 retailers

7 retailers$410 SGD to $665 SGD

A
Cheapest Retailer
-
$410 SGD
$321 USD
A
Retailer 2
-
$444 SGD
€331 EUR
View
A
Retailer 3
-
$460 SGD
£284 GBP
View
A
Retailer 4
-
$468 SGD
$366 USD
View
B+
Retailer 5
-
$494 SGD
£304 GBP
View
B+
Retailer 6
-
$665 SGD
$520 USD
View
Most Expensive
MOH London
LG750578543 · Oct 25
$1,231 SGD
£758 GBP
View
Price last confirmed 7 days ago
6 more retailers have this diamond
Prices start from $410 SGDSave up to $254 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
1.00ct Cushion
$410 SGD