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Cushion|Lab Grown|IGI

1.28ct E VVS1 Cushion Lab Grown Diamond

EX • E/VVS1 • IGI LG723540900

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG723540900

Diamond specifications and retailer prices

From £199 GBP
$266 USD
As of October 30, 2026
Save £1,122 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,321 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG723540900 or 723540900. Listed at 16 retailers as of October 29, 2026, with prices from £199 to £1,321, a £1,122 spread on the same certified stone. Brilliant Earth lists it at £1,321. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG723540900
Dimensions5.80 × 5.80 × 3.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
5.80 mm5.80 mm1.28 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG723540900
Side View
Table 63.0%Crown 31.5°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 68.8%

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: £1,321 GBP|Low: £199 GBP|High: £1,366 GBP|Avg: £511 GBP|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 5£199 GBP
Retailer 3£220 GBP
Retailer 7£271 GBP
Retailer 13£297 GBP
Retailer 9£379 GBP
Retailer 4£401 GBP
Retailer 8£401 GBP
Retailer 2£417 GBP
Retailer 6£466 GBP
Retailer 10£538 GBP
Retailer 12£563 GBP
Retailer 14£709 GBP
Retailer 11£888 GBP
Brilliant Earth£1,321 GBP

41 data points across 14 retailers

16 retailers£199 GBP to £1,321 GBP

A
Cheapest Retailer
-
£199 GBP
$266 USD
Final sale: no returns
A
Retailer 2
-
£220 GBP
$295 USD
View
A
Retailer 3
-
£271 GBP
View
A
Retailer 4
-
£297 GBP
$398 USD
View
A
Retailer 5
-
£379 GBP
ZAR 8,197 ZAR
View
A
Retailer 6
-
£401 GBP
$537 USD
View
A
Retailer 7
-
£401 GBP
€512 EUR
View
A
Retailer 8
-
£417 GBP
View
A
Retailer 9
-
£466 GBP
$624 USD
View
B+
Retailer 10
-
£538 GBP
A$1,108 AUD
View
B+
Retailer 11
-
£563 GBP
$755 USD
View
Retailer 12
-
£709 GBP
$950 USD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
£747 GBP
$1,001 USD
View
B
Retailer 14
-
£888 GBP
View
B
Retailer 15
-
£982 GBP
$1,315 USD
View
Most Expensive
B
Brilliant Earth
21313249A · Oct 29
£1,321 GBP
$1,770 USD
View
15 more retailers have this diamond
Prices start from £199 GBPSave up to £1,122 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
£199 GBP