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Cushion|Lab Grown|IGI

1.78ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG623410236

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG623410236

Diamond specifications and retailer prices

From $6,607 CAD
$4,730 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: $6,607 CAD at Shane Co
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Shane Co

About this 1.78ct lab-grown cushion diamond

This 1.78ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG623410236 or 623410236. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.78
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623410236
Dimensions8.01 × 6.42 mm
L/W Ratio1.25
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
8.01 mm6.42 mm1.78 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623410236
Side View
Table 62.0%Crown 32°Girdle: THN-STKPavilion 39.1°Culet: NoneDepth 70.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $6,607 CAD|Low: $6,531 CAD|High: $7,054 CAD|Avg: $6,689 CAD|+1.2%
September 18, 2026
Shane Co$6,607 CAD

6 data points across 1 retailer

1 retailer

B
Shane Co
25C0TW4 · Oct 30
$6,607 CAD
$4,730 USD
View

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B
1.78ct Cushion
$6,607 CAD