Radiant|Lab Grown|IGI

1.09ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG789604613

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG789604613

Diamond specifications and retailer prices

From £161 GBP
$216 USD
As of November 1, 2026
Save £899 GBP (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,060 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant 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 LG789604613 or 789604613. Listed at 21 retailers as of October 31, 2026, with prices from £161 to £1,060, a £899 spread on the same certified stone. Brilliant Earth lists it at £1,060. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789604613
Dimensions7.28 × 5.03 × 3.43 mm
L/W Ratio1.45
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
7.28 mm5.03 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789604613
Side View
Table 65.0%Crown 44°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,060 GBP|Low: £161 GBP|High: £1,373 GBP|Avg: £452 GBP|-22.8%
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
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Retailer 17
Retailer 18
November 2, 2026
Retailer 5£161 GBP
Retailer 9£162 GBP
Retailer 18£190 GBP
Retailer 8£210 GBP
Retailer 10£210 GBP
Retailer 14£299 GBP
Retailer 11£308 GBP
Retailer 13£311 GBP
Retailer 2£325 GBP
Retailer 3£414 GBP
Retailer 15£428 GBP
Retailer 16£435 GBP
Retailer 17£475 GBP
Retailer 7£484 GBP
Retailer 4£613 GBP
Retailer 12£833 GBP
Retailer 6£873 GBP
Brilliant Earth£1,060 GBP

38 data points across 18 retailers

21 retailers£161 GBP to £1,060 GBP

A
Cheapest Retailer
-
£161 GBP
$216 USD
Final sale: no returns
Retailer 2
-
£162 GBP
$217 USD
View
Price last confirmed 31 days ago
Retailer 3
-
£190 GBP
View
Price last confirmed 16 days ago
Retailer 4
-
£196 GBP
$263 USD
View
Price last confirmed 35 days ago
Retailer 5
-
£210 GBP
$281 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£210 GBP
$281 USD
View
Price last confirmed 30 days ago
A
Retailer 7
-
£299 GBP
€381 EUR
View
A
Retailer 8
-
£308 GBP
ZAR 6,663 ZAR
View
A
Retailer 9
-
£311 GBP
$417 USD
View
A
Retailer 10
-
£325 GBP
View
A
Retailer 11
-
£414 GBP
$555 USD
View
A
Retailer 12
-
£428 GBP
$574 USD
View
A
Retailer 13
-
£435 GBP
A$897 AUD
View
B+
Retailer 14
-
£475 GBP
$636 USD
View
A
Retailer 15
-
£484 GBP
SGD 877 SGD
View
B+
Retailer 16
-
£613 GBP
$822 USD
View
Retailer 17
-
£673 GBP
$902 USD
View
Price last confirmed 32 days ago
Retailer 18
-
£683 GBP
A$1,408 AUD
View
Price last confirmed 139 days ago
B+
Retailer 19
-
£833 GBP
View
B
Retailer 20
-
£873 GBP
$1,170 USD
View
Most Expensive
B
Brilliant Earth
18991251A · Oct 31
£1,060 GBP
$1,420 USD
View
20 more retailers have this diamond
Prices start from £161 GBPSave up to £899 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
1.09ct Radiant
£161 GBP