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Cushion|Lab Grown|IGI

1.58ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG665403539

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG665403539

Diamond specifications and retailer prices

From £308 GBP
$413 USD
As of October 30, 2026
Save £1,192 GBP (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,500 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG665403539 or 665403539. Listed at 8 retailers as of October 30, 2026, with prices from £308 to £1,500, a £1,192 spread on the same certified stone. Do Amore Diamonds lists it at £1,500. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665403539
Dimensions6.85 × 6.52 × 4.46 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.85 mm6.52 mm1.58 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG665403539
Side View
Table 58.0%Crown 36.8°Girdle: MED-VTKPavilion 40.5°Culet: NoneDepth 68.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,500 GBP|Low: £308 GBP|High: £1,500 GBP|Avg: £659 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8£308 GBP
Retailer 6£333 GBP
Retailer 3£358 GBP
Retailer 4£367 GBP
Retailer 7£386 GBP
Retailer 5£649 GBP
Retailer 11£696 GBP
Retailer 9£815 GBP
Retailer 2£861 GBP
Retailer 10£978 GBP
Do Amore Diamonds£1,500 GBP

19 data points across 11 retailers

8 retailers£308 GBP to £1,500 GBP

A
Cheapest Retailer
-
£308 GBP
$413 USD
B+
Retailer 2
-
£333 GBP
$446 USD
View
A
Retailer 3
-
£367 GBP
ZAR 7,942 ZAR
View
A
Retailer 4
-
£386 GBP
$517 USD
View
Retailer 5
-
£649 GBP
$870 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£815 GBP
$1,091 USD
View
B
Retailer 7
-
£861 GBP
View
Most Expensive
B
Do Amore Diamonds
27-E318F046D · Oct 31
£1,500 GBP
$2,010 USD
View
7 more retailers have this diamond
Prices start from £308 GBPSave up to £1,192 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
£308 GBP