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Cushion|Lab Grown|IGI

1.58ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG474112402

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG474112402

Diamond specifications and retailer prices

From £305 GBP
€389 EUR
As of October 31, 2026
Save £474 GBP (61%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £778 GBP at Riddles Jewelry · As of October 31, 2026
View at Riddles Jewelry

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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG474112402 or 474112402. Listed at 4 retailers as of October 31, 2026, with prices from £305 to £778, a £474 spread on the same certified stone. Riddles Jewelry lists it at £778. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474112402
Dimensions6.83 × 6.57 × 4.46 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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 mm6.57 mm1.58 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474112402
Side View
Table 63.5%Crown 36.1°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 67.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £305 GBP|Low: £298 GBP|High: £877 GBP|Avg: £623 GBP|-20.0%
Retailer 1
Retailer 2
Retailer 3
Riddles Jewelry
October 31, 2026
Retailer 1£305 GBP
Retailer 2£679 GBP
Retailer 3£693 GBP
Riddles Jewelry£778 GBP

18 data points across 4 retailers

4 retailers£305 GBP to £778 GBP

A
Cheapest Retailer
-
£305 GBP
€389 EUR
B+
Retailer 2
-
£679 GBP
$910 USD
View
B+
Retailer 3
-
£693 GBP
$928 USD
View
Most Expensive
B+
Riddles Jewelry
1890888643 · Oct 31
£778 GBP
$1,043 USD
View
3 more retailers have this diamond
Prices start from £305 GBPSave up to £474 GBP

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
1.58ct Cushion
£305 GBP