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Cushion|Lab Grown|IGI

1.45ct D VS1 Cushion Lab Grown Diamond

VG • D/VS1 • IGI LG685501147

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG685501147

Diamond specifications and retailer prices

From $433 NZD
As of November 4, 2026
Save $2,636 NZD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,069 NZD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.45ct lab-grown cushion diamond

This 1.45ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG685501147 or 685501147. Listed at 15 retailers as of November 3, 2026, with prices from $433 to $3,069, a $2,636 spread on the same certified stone. Brilliant Earth lists it at $3,069. 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

1.45
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685501147
Dimensions6.39 × 6.39 × 4.43 mm
L/W Ratio1.00
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
6.39 mm6.39 mm1.45 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685501147
Side View
Table 58.0%Crown 37.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 69.3%

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 4
Current: $3,069 NZD|Low: $433 NZD|High: $3,335 NZD|Avg: $1,215 NZD|-8.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 3$433 NZD
Retailer 12$481 NZD
Retailer 11$648 NZD
Retailer 6$830 NZD
Retailer 7$873 NZD
Retailer 2$883 NZD
Retailer 4$1,132 NZD
Retailer 5$1,176 NZD
Retailer 10$1,219 NZD
Retailer 9$1,579 NZD
Retailer 8$1,937 NZD
Brilliant Earth$3,069 NZD

42 data points across 12 retailers

15 retailers$433 NZD to $3,069 NZD

A
Cheapest Retailer
-
$433 NZD
Final sale: no returns
Retailer 2
-
$481 NZD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$648 NZD
View
A
Retailer 4
-
$830 NZD
View
A
Retailer 5
-
$873 NZD
View
A
Retailer 6
-
$883 NZD
View
B+
Retailer 7
-
$1,132 NZD
View
B+
Retailer 8
-
$1,176 NZD
View
B+
Retailer 9
-
$1,219 NZD
View
Retailer 10
-
$1,579 NZD
View
Price last confirmed 17 days ago
B
Retailer 11
-
$1,639 NZD
View
Retailer 12
-
$1,666 NZD
View
Price last confirmed 88 days ago
B
Retailer 13
-
$1,937 NZD
View
B
Retailer 14
-
$2,223 NZD
View
Most Expensive
B
Brilliant Earth
21312028A · Nov 3
$3,069 NZD
$1,730 USD
View
14 more retailers have this diamond
Prices start from $433 NZDSave up to $2,636 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
1.45ct Cushion
$433 NZD