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Cushion|Lab Grown|IGI

1.23ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG579399928

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG579399928

Diamond specifications and retailer prices

From €820 EUR
$920 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: €820 EUR at Brilliant Earth
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 Brilliant Earth

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 top-tier cut grade and certified by IGI LG579399928 or 579399928. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579399928
Dimensions6.21 × 6.13 × 4.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.21 mm6.13 mm1.23 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579399928
Side View
Table 60.0%Crown 38.5°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 68.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: €820 EUR|Low: €820 EUR|High: €820 EUR|Avg: €820 EUR
December 26, 2025
Brilliant Earth€820 EUR

2 data points across 1 retailer

1 retailer

B
Brilliant Earth
13714654Y · Nov 2
€820 EUR
$920 USD
View

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.

B
1.23ct Cushion
€820 EUR