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Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG607301792

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG607301792

Diamond specifications and retailer prices

From £231 GBP
As of October 29, 2026
Save £1,116 GBP (83%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,347 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG607301792 or 607301792. Listed at 8 retailers as of October 29, 2026, with prices from £231 to £1,347, a £1,116 spread on the same certified stone. Do Amore Diamonds lists it at £1,347. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607301792
Dimensions6.33 × 6.25 × 4.17 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
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
6.33 mm6.25 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607301792
Side View
Table 61.0%Crown 34.9°Girdle: THN-MEDPavilion 39.6°Culet: NoneDepth 66.7%

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 29
Current: £1,347 GBP|Low: £230 GBP|High: £1,347 GBP|Avg: £643 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2£231 GBP
Retailer 5£306 GBP
Retailer 3£470 GBP
Retailer 6£609 GBP
Retailer 7£610 GBP
Retailer 8£735 GBP
Retailer 4£899 GBP
Do Amore Diamonds£1,347 GBP

19 data points across 8 retailers

8 retailers£231 GBP to £1,347 GBP

A
Cheapest Retailer
-
£231 GBP
A
Retailer 2
-
£306 GBP
$406 USD
View
B+
Retailer 3
-
£391 GBP
$520 USD
View
B+
Retailer 4
-
£470 GBP
A$960 AUD
View
B
Retailer 5
-
£609 GBP
$810 USD
View
B
Retailer 6
-
£610 GBP
$810 USD
View
B
Retailer 7
-
£899 GBP
View
Most Expensive
B
Do Amore Diamonds
27-CD17CD6D9 · Oct 29
£1,347 GBP
$1,790 USD
View
7 more retailers have this diamond
Prices start from £231 GBPSave up to £1,116 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
1.28ct Cushion
£231 GBP