Cushion|Lab Grown|IGI

1.23ct D IF Cushion Lab Grown Diamond

VG • D/IF • IGI LG656488285

Certificate IGI LG656488285

Diamond specifications and retailer prices

This diamond has been sold
Last seen: Sep 9, 2026 at $2,485 USD
$2,485 USDlast known price

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG656488285 or 656488285. 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

1.23
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG656488285
Dimensions7.50 × 5.54 mm
L/W Ratio1.35
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
7.50 mm5.54 mm1.23 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG656488285
Side View
Table 62.0%Crown 31.8°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 70.8%

Caratlytics Score

Price History

Last verified: Sep 9
Current: $2,485 USD|Low: $2,350 USD|High: $2,605 USD|Avg: $2,428 USD|+5.7%

5 data points across 1 retailer

Historical Listings

Shane Co
25C0TVW · Sep 9
$2,485 USD
View

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1.23ct D IF Cushion Lab-Grown Diamond (Sold), IGI LG656488285