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Cushion|Lab Grown|IGI

1.28ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG840622206

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840622206

Diamond specifications and retailer prices

From £146 GBP
$195 USD
As of November 1, 2026
Save £1,101 GBP (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,246 GBP at Do Amore Diamonds · As of November 2, 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 LG840622206 or 840622206. Listed at 10 retailers as of November 1, 2026, with prices from £146 to £1,246, a £1,101 spread on the same certified stone. Do Amore Diamonds lists it at £1,246. 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 angle32.6°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840622206
Dimensions8.08 × 5.34 × 3.65 mm
L/W Ratio1.51
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.08 mm5.34 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840622206
Side View
Table 62.0%Crown 32.6°Girdle: STK-THKPavilion 38.5°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: Nov 1
Current: £1,246 GBP|Low: £146 GBP|High: £1,246 GBP|Avg: £427 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8£146 GBP
Retailer 3£189 GBP
Retailer 2£213 GBP
Retailer 9£219 GBP
Retailer 5£295 GBP
Retailer 6£349 GBP
Retailer 7£522 GBP
Retailer 10£580 GBP
Retailer 4£832 GBP
Do Amore Diamonds£1,246 GBP

5 data points across 10 retailers

10 retailers£146 GBP to £1,246 GBP

A
Cheapest Retailer
-
£146 GBP
$195 USD
Final sale: no returns
A
Retailer 2
-
£189 GBP
$253 USD
View
A
Retailer 3
-
£213 GBP
View
B+
Retailer 4
-
£219 GBP
$294 USD
View
A
Retailer 5
-
£295 GBP
€376 EUR
View
A
Retailer 6
-
£349 GBP
$467 USD
View
B+
Retailer 7
-
£522 GBP
$700 USD
View
B+
Retailer 8
-
£580 GBP
$777 USD
View
B
Retailer 9
-
£832 GBP
View
Most Expensive
B
Do Amore Diamonds
27-2497E40CA · Nov 2
£1,246 GBP
$1,670 USD
View
9 more retailers have this diamond
Prices start from £146 GBPSave up to £1,101 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
£146 GBP