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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 $571 NZD
$321 USD
As of November 1, 2026
Save $354 NZD (38%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,711 NZD 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 November 1, 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,711 NZD|Low: $571 NZD|High: $1,711 NZD|Avg: $847 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$571 NZD
Retailer 3$618 NZD
Retailer 2$640 NZD
Retailer 5$650 NZD
Retailer 6$687 NZD
Retailer 9$908 NZD
Retailer 4$924 NZD
Retailer 8$968 NZD
MOH London$1,711 NZD

11 data points across 9 retailers

7 retailers$571 NZD to $924 NZD

A
Cheapest Retailer
-
$571 NZD
$321 USD
A
Retailer 2
-
$618 NZD
€331 EUR
View
A
Retailer 3
-
$640 NZD
£284 GBP
View
A
Retailer 4
-
$650 NZD
$366 USD
View
B+
Retailer 5
-
$687 NZD
£304 GBP
View
B+
Retailer 6
-
$924 NZD
$520 USD
View
Most Expensive
MOH London
LG750578543 · Oct 25
$1,711 NZD
£758 GBP
View
Price last confirmed 8 days ago
6 more retailers have this diamond
Prices start from $571 NZDSave up to $354 NZD

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
$571 NZD