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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 $467 AUD
As of November 6, 2026
Save $914 AUD (66%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,381 AUD at MOH London · As of November 4, 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 November 4, 2026, with prices from $467 to $1,381, a $914 spread on the same certified stone. MOH London lists it at $1,381. 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

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,381 AUD|Low: $467 AUD|High: $1,401 AUD|Avg: $694 AUD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$467 AUD
Retailer 2$504 AUD
Retailer 3$518 AUD
Retailer 5$533 AUD
Retailer 6$562 AUD
Retailer 9$742 AUD
Retailer 4$757 AUD
Retailer 8$792 AUD
MOH London$1,381 AUD

15 data points across 9 retailers

7 retailers$467 AUD to $1,381 AUD

A
Cheapest Retailer
-
$467 AUD
A
Retailer 2
-
$504 AUD
View
A
Retailer 3
-
$518 AUD
View
A
Retailer 4
-
$533 AUD
View
B+
Retailer 5
-
$562 AUD
View
B+
Retailer 6
-
$757 AUD
View
Most Expensive
B
MOH London
LG750578543 · Nov 4
$1,381 AUD
£747 GBP
View
6 more retailers have this diamond
Prices start from $467 AUDSave up to $914 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.

A
1.00ct Cushion
$467 AUD