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Cushion|Lab Grown|IGI

1.02ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG778640051

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG778640051

Diamond specifications and retailer prices

From £189 GBP
$253 USD
As of October 26, 2026
Save £1,013 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,202 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778640051 or 778640051. Listed at 15 retailers as of October 26, 2026, with prices from £189 to £1,202, a £1,013 spread on the same certified stone. Brilliant Earth lists it at £1,202. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.02
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778640051
Dimensions7.24 × 4.93 × 3.46 mm
L/W Ratio1.47
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
7.24 mm4.93 mm1.02 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778640051
Side View
Table 62.0%Crown 37°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 70.2%

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 26
Current: £1,202 GBP|Low: £189 GBP|High: £1,239 GBP|Avg: £528 GBP|-3.0%
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 3£189 GBP
Retailer 15£210 GBP
Retailer 9£349 GBP
Retailer 4£356 GBP
Retailer 10£360 GBP
Retailer 8£373 GBP
Retailer 6£384 GBP
Retailer 2£392 GBP
Retailer 5£433 GBP
Retailer 11£512 GBP
Retailer 14£549 GBP
Retailer 16£662 GBP
Retailer 7£714 GBP
Retailer 13£845 GBP
Retailer 12£952 GBP
Brilliant Earth£1,202 GBP

42 data points across 16 retailers

15 retailers£189 GBP to £1,202 GBP

A
Cheapest Retailer
-
£189 GBP
$253 USD
Final sale: no returns
A
Retailer 2
-
£210 GBP
$281 USD
View
A
Retailer 3
-
£349 GBP
€445 EUR
View
A
Retailer 4
-
£356 GBP
$477 USD
View
A
Retailer 5
-
£360 GBP
ZAR 7,800 ZAR
View
A
Retailer 6
-
£384 GBP
$514 USD
View
A
Retailer 7
-
£392 GBP
View
A
Retailer 8
-
£433 GBP
$580 USD
View
A
Retailer 9
-
£512 GBP
A$1,055 AUD
View
A
Retailer 10
-
£549 GBP
$735 USD
View
B+
Retailer 11
-
£662 GBP
SGD 1,198 SGD
View
B+
Retailer 12
-
£714 GBP
$956 USD
View
Retailer 13
-
£845 GBP
View
Price last confirmed 9 days ago
Retailer 14
-
£952 GBP
$1,275 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
21417353A · Oct 29
£1,202 GBP
$1,610 USD
View
14 more retailers have this diamond
Prices start from £189 GBPSave up to £1,013 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
1.02ct Cushion
£189 GBP