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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 $321 USD
As of October 30, 2026
Save $642 USD (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $963 USD 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 25, 2026, with prices from $321 to $963, a $642 spread on the same certified stone. MOH London lists it at $963. 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
Color
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: $963 USD|Low: $321 USD|High: $963 USD|Avg: $476 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$321 USD
Retailer 6$351 USD
Retailer 2$357 USD
Retailer 4$366 USD
Retailer 5$386 USD
Retailer 9$511 USD
Retailer 3$520 USD
Retailer 8$545 USD
MOH London$963 USD

9 data points across 9 retailers

7 retailers$321 USD to $963 USD

A
Cheapest Retailer
-
$321 USD
A
Retailer 2
-
$351 USD
€334 EUR
View
A
Retailer 3
-
$357 USD
£281 GBP
View
A
Retailer 4
-
$366 USD
View
B+
Retailer 5
-
$386 USD
£304 GBP
View
B+
Retailer 6
-
$520 USD
View
Most Expensive
B
MOH London
LG750578543 · Oct 25
$963 USD
£758 GBP
View
6 more retailers have this diamond
Prices start from $321 USDSave up to $642 USD

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
$321 USD