CaratHunter
Plans
Cushion|Lab Grown|IGI

1.05ct E IF Cushion Lab Grown Diamond

VG • E/IF • IGI LG816615873

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816615873

Diamond specifications and retailer prices

From £215 GBP
$288 USD
As of October 25, 2026
Save £1,009 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,224 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.05ct lab-grown cushion diamond

This 1.05ct 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 LG816615873 or 816615873. Listed at 13 retailers as of October 25, 2026, with prices from £215 to £1,224, a £1,009 spread on the same certified stone. Brilliant Earth lists it at £1,224. 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

1.05
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615873
Dimensions7.12 × 5.13 × 3.54 mm
L/W Ratio1.39
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
7.12 mm5.13 mm1.05 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615873
Side View
Table 62.0%Crown 35.4°Girdle: THK-VTKPavilion 35.3°Culet: NoneDepth 69.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £1,224 GBP|Low: £215 GBP|High: £1,261 GBP|Avg: £595 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
October 30, 2026
Retailer 10£215 GBP
Retailer 7£357 GBP
Retailer 3£364 GBP
Retailer 8£370 GBP
Retailer 6£384 GBP
Retailer 2£406 GBP
Retailer 4£456 GBP
Retailer 9£525 GBP
Retailer 13£565 GBP
Retailer 14£680 GBP
Retailer 5£731 GBP
Retailer 11£867 GBP
Retailer 12£981 GBP
Brilliant Earth£1,224 GBP

40 data points across 14 retailers

13 retailers£215 GBP to £1,224 GBP

A
Cheapest Retailer
-
£215 GBP
$288 USD
A
Retailer 2
-
£357 GBP
€455 EUR
View
A
Retailer 3
-
£364 GBP
$488 USD
View
A
Retailer 4
-
£370 GBP
ZAR 8,002 ZAR
View
A
Retailer 5
-
£406 GBP
View
A
Retailer 6
-
£456 GBP
$611 USD
View
A
Retailer 7
-
£525 GBP
A$1,082 AUD
View
B+
Retailer 8
-
£565 GBP
$757 USD
View
B+
Retailer 9
-
£680 GBP
SGD 1,231 SGD
View
B+
Retailer 10
-
£731 GBP
$979 USD
View
B+
Retailer 11
-
£867 GBP
View
Retailer 12
-
£981 GBP
$1,315 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
21421474A · Oct 28
£1,224 GBP
$1,640 USD
View
12 more retailers have this diamond
Prices start from £215 GBPSave up to £1,009 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
1.05ct Cushion
£215 GBP