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Cushion|Lab Grown|IGI

1.01ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG836621509

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836621509

Diamond specifications and retailer prices

From £208 GBP
$279 USD
As of October 25, 2026
Save £964 GBP (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,172 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836621509 or 836621509. Listed at 15 retailers as of October 25, 2026, with prices from £208 to £1,172, a £964 spread on the same certified stone. Brilliant Earth lists it at £1,172. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836621509
Dimensions7.40 × 5.09 × 3.35 mm
L/W Ratio1.45
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
7.40 mm5.09 mm1.01 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836621509
Side View
Table 62.0%Crown 33.8°Girdle: MED-STKPavilion 35.7°Culet: NoneDepth 65.8%

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 25
Current: £1,172 GBP|Low: £208 GBP|High: £1,172 GBP|Avg: £585 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
October 30, 2026
Retailer 14£208 GBP
Retailer 2£221 GBP
Retailer 4£355 GBP
Retailer 11£357 GBP
Retailer 3£382 GBP
Retailer 8£388 GBP
Retailer 9£406 GBP
Retailer 5£425 GBP
Retailer 12£507 GBP
Retailer 15£658 GBP
Retailer 7£708 GBP
Retailer 10£838 GBP
Retailer 13£940 GBP
Retailer 6£1,171 GBP
Brilliant Earth£1,172 GBP

26 data points across 15 retailers

15 retailers£208 GBP to £1,172 GBP

A
Cheapest Retailer
-
£208 GBP
$279 USD
A
Retailer 2
-
£221 GBP
View
A
Retailer 3
-
£355 GBP
$475 USD
View
A
Retailer 4
-
£357 GBP
ZAR 7,734 ZAR
View
A
Retailer 5
-
£382 GBP
$512 USD
View
A
Retailer 6
-
£388 GBP
View
A
Retailer 7
-
£406 GBP
€518 EUR
View
A
Retailer 8
-
£425 GBP
$570 USD
View
A
Retailer 9
-
£507 GBP
A$1,046 AUD
View
B+
Retailer 10
-
£658 GBP
SGD 1,192 SGD
View
B+
Retailer 11
-
£708 GBP
$948 USD
View
B+
Retailer 12
-
£838 GBP
View
Retailer 13
-
£940 GBP
$1,260 USD
View
Price last confirmed 11 days ago
B
Retailer 14
-
£1,171 GBP
$1,569 USD
View
Most Expensive
B
Brilliant Earth
21695387A · Oct 29
£1,172 GBP
$1,570 USD
View
14 more retailers have this diamond
Prices start from £208 GBPSave up to £964 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
1.01ct Cushion
£208 GBP