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Radiant|Lab Grown|IGI

1.09ct E VS1 Radiant Lab Grown Diamond

VG • E/VS1 • IGI LG645435170

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

Certificate IGI LG645435170

Diamond specifications and retailer prices

From £164 GBP
$218 USD
As of October 30, 2026
Save £775 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £939 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 very-good cut grade and certified by IGI LG645435170 or 645435170. Listed at 17 retailers as of October 30, 2026, with prices from £164 to £939, a £775 spread on the same certified stone. Reve Diamonds lists it at £939. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645435170
Dimensions7.28 × 4.98 × 3.42 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.28 mm4.98 mm1.09 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645435170
Side View
Table 68.0%Crown 40.2°Girdle: MediumPavilion 31.9°Culet: NoneDepth 68.7%

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 30
Current: £376 GBP|Low: £176 GBP|High: £939 GBP|Avg: £518 GBP|+9.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
October 30, 2026
Retailer 4£183 GBP
Retailer 12£284 GBP
Retailer 11£347 GBP
Retailer 6£348 GBP
Retailer 1£376 GBP
Retailer 2£381 GBP
Retailer 7£495 GBP
Retailer 10£652 GBP
Retailer 8£654 GBP
Retailer 3£692 GBP
Retailer 5£817 GBP
Retailer 9£849 GBP
Reve Diamonds£939 GBP

43 data points across 13 retailers

17 retailers£164 GBP to £939 GBP

A
Cheapest Retailer
-
£164 GBP
$218 USD
A
Retailer 2
-
£183 GBP
$244 USD
View
Final sale: no returns
A
Retailer 3
-
£190 GBP
$253 USD
View
A
Retailer 4
-
£203 GBP
$270 USD
View
A
Retailer 5
-
£203 GBP
$270 USD
View
A
Retailer 6
-
£284 GBP
$378 USD
View
B+
Retailer 7
-
£347 GBP
$462 USD
View
B+
Retailer 8
-
£348 GBP
ZAR 7,495 ZAR
View
B+
Retailer 9
-
£376 GBP
View
B+
Retailer 10
-
£381 GBP
$507 USD
View
B+
Retailer 11
-
£495 GBP
A$1,015 AUD
View
B
Retailer 12
-
£652 GBP
$868 USD
View
B
Retailer 13
-
£654 GBP
$871 USD
View
B
Retailer 14
-
£692 GBP
$921 USD
View
B
Retailer 15
-
£817 GBP
View
B
Retailer 16
-
£849 GBP
$1,130 USD
View
Most Expensive
B
Reve Diamonds
10859158B · Oct 30
£939 GBP
$1,250 USD
View
16 more retailers have this diamond
Prices start from £164 GBPSave up to £775 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
£164 GBP