Radiant|Lab Grown|IGI

1.09ct E VS1 Radiant Lab Grown Diamond

GD • E/VS1 • IGI LG623490081

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

Certificate IGI LG623490081

Diamond specifications and retailer prices

From £143 GBP
$190 USD
As of October 28, 2026
Save £682 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £849 GBP at Brilliant Earth · As of October 9, 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 VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG623490081 or 623490081. Listed at 18 retailers as of October 28, 2026, with a 478% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.09
Carat
E
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623490081
Dimensions7.54 × 5.02 × 3.38 mm
L/W Ratio1.50
Culet sizePointed
Top View
7.54 mm5.02 mm1.09 ctE / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623490081
Side View
Table 66.0%Crown 43.2°Girdle: MediumPavilion 35.3°Culet: NoneDepth 67.3%

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 28
Current: £849 GBP|Low: £141 GBP|High: £888 GBP|Avg: £380 GBP
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
Retailer 17
October 29, 2026
Retailer 6£143 GBP
Retailer 8£146 GBP
Retailer 9£155 GBP
Retailer 7£183 GBP
Retailer 11£199 GBP
Retailer 16£271 GBP
Retailer 12£272 GBP
Retailer 2£281 GBP
Retailer 17£283 GBP
Retailer 14£300 GBP
Retailer 13£386 GBP
Retailer 4£398 GBP
Retailer 15£538 GBP
Retailer 5£550 GBP
Retailer 10£745 GBP
Retailer 3£825 GBP
Brilliant Earth£849 GBP

35 data points across 17 retailers

18 retailers£143 GBP to £825 GBP

A
Cheapest Retailer
-
£143 GBP
$190 USD
Final sale: no returns
Retailer 2
-
£146 GBP
$195 USD
View
Price last confirmed 32 days ago
Retailer 3
-
£155 GBP
$206 USD
View
Price last confirmed 32 days ago
Retailer 4
-
£183 GBP
$244 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
£199 GBP
View
A
Retailer 6
-
£271 GBP
$361 USD
View
A
Retailer 7
-
£272 GBP
ZAR 5,851 ZAR
View
B+
Retailer 8
-
£281 GBP
View
B+
Retailer 9
-
£283 GBP
$377 USD
View
B+
Retailer 10
-
£300 GBP
€381 EUR
View
B+
Retailer 11
-
£386 GBP
A$791 AUD
View
B+
Retailer 12
-
£398 GBP
$530 USD
View
B
Retailer 13
-
£515 GBP
View
B
Retailer 14
-
£538 GBP
$716 USD
View
B
Retailer 15
-
£550 GBP
$733 USD
View
B
Retailer 16
-
£745 GBP
View
B
Retailer 17
-
£825 GBP
$1,098 USD
View
Most Expensive
Brilliant Earth
9396776A · Oct 9
£849 GBP
$1,130 USD
View
Price last confirmed 20 days ago
17 more retailers have this diamond
Prices start from £143 GBPSave up to £682 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
£143 GBP