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Cushion|Lab Grown|IGI

1.58ct J VS1 Cushion Lab Grown Diamond

ID • J/VS1 • IGI LG610312815

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG610312815

Diamond specifications and retailer prices

From £963 GBP
$1,290 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: £963 GBP 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 1.58ct lab-grown cushion diamond

This 1.58ct lab-grown cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG610312815 or 610312815. Listed at a single retailer as of October 31, 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

1.58
Carat
J
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG610312815
Dimensions6.83 × 6.73 × 4.49 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
6.83 mm6.73 mm1.58 ctJ / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG610312815
Side View
Table 63.0%Crown 33.7°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 66.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £963 GBP|Low: £963 GBP|High: £1,015 GBP|Avg: £1,002 GBP|-5.1%
July 26, 2026
Brilliant Earth£963 GBP

4 data points across 1 retailer

1 retailer

B+
Brilliant Earth
8642626B · Oct 31
£963 GBP
$1,290 USD
View

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B+
1.58ct Cushion
£963 GBP