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Radiant|Lab Grown|IGI

1.05ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG492136441

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

Certificate IGI LG492136441

Diamond specifications and retailer prices

From £706 GBP
$940 USD
As of October 29, 2026
Save £298 GBP (30%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,004 GBP at Loose Grown Diamond · As of October 28, 2026
View at Loose Grown Diamond

About this 1.05ct lab-grown radiant diamond

This 1.05ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG492136441 or 492136441. Listed at 5 retailers as of October 28, 2026, with prices from £706 to £1,004, a £298 spread on the same certified stone. Loose Grown Diamond lists it at £1,004. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492136441
Dimensions7.10 × 4.98 × 3.44 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.10 mm4.98 mm1.05 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492136441
Side View
Table 65.5%Crown 40.2°Girdle: MediumPavilion 32.1°Culet: NoneDepth 69.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £1,004 GBP|Low: £706 GBP|High: £2,456 GBP|Avg: £1,283 GBP|+1.9%
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4£706 GBP
Retailer 5£975 GBP
Retailer 2£991 GBP
Loose Grown Diamond£1,004 GBP
Retailer 6£1,770 GBP
Retailer 3£2,430 GBP

42 data points across 6 retailers

5 retailers£706 GBP to £1,004 GBP

B
Cheapest Retailer
-
£706 GBP
$940 USD
B
Retailer 2
-
£991 GBP
View
Most Expensive
C
Loose Grown Diamond
492136441 · Oct 28
£1,004 GBP
$1,337 USD
View
2 more retailers have this diamond
Prices start from £706 GBPSave up to £298 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.

B
1.05ct Radiant
£706 GBP