Cushion|Lab Grown|IGI

1.23ct G VS1 Cushion Lab Grown Diamond

VG • G/VS1

Diamond specifications and retailer prices

From $260 USD
£205 GBP
As of October 27, 2026
Save $404 USD (61%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $664 USD at Blue Nile · As of October 27, 2026
View at Blue Nile

About this 1.23ct lab-grown cushion diamond

This 1.23ct lab-grown cushion sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI. Listed at 2 retailers as of October 27, 2026, with prices from $260 to $664, a $404 spread on the same certified stone. Blue Nile lists it at $664. 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
G
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.59 × 5.54 × 0.00 mm
L/W Ratio1.37
Top View
7.59 mm5.54 mm1.23 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $664 USD|Low: $260 USD|High: $664 USD|Avg: $459 USD
Blue Nile
Retailer 2
October 27, 2026
Retailer 2$260 USD
Blue Nile$664 USD

34 data points across 2 retailers

2 retailers$260 USD to $664 USD

A
Cheapest Retailer
-
$260 USD
£205 GBP
Most Expensive
B
Blue Nile
20170510 · Oct 27
$664 USD
View
1 more retailer has this diamond
Prices start from $260 USDSave up to $404 USD

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
1.23ct Cushion
$260 USD