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Radiant|Lab Grown|IGI

1.18ct F VVS1 Radiant Lab Grown Diamond

F/VVS1 • IGI LG691511143

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

Certificate IGI LG691511143

Diamond specifications and retailer prices

From £911 GBP
$1,210 USD
As of October 28, 2026
Save £105 GBP (10%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,016 GBP at Kay Jewelers · As of October 28, 2026
View at Kay Jewelers

About this 1.18ct lab-grown radiant diamond

This 1.18ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included) and certified by IGI LG691511143 or 691511143. Listed at 2 retailers as of October 28, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.18
Carat
F
Colour
VVS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691511143
Dimensions7.52 × 5.23 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm5.23 mm1.18 ctF / VVS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691511143
Side View
Table 60.0%Crown 39.5°Girdle: STK-THKPavilion 34.9°Culet: NoneDepth 66.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: £1,016 GBP|Low: £911 GBP|High: £1,257 GBP|Avg: £1,105 GBP|-19.2%
Kay Jewelers
Retailer 2
September 28, 2026
Retailer 2£911 GBP
Kay Jewelers£1,016 GBP

5 data points across 2 retailers

2 retailers£911 GBP to £1,016 GBP

B
Cheapest Retailer
-
£911 GBP
$1,210 USD
Most Expensive
C
Kay Jewelers
255398822 · Oct 28
£1,016 GBP
$1,350 USD
View
1 more retailer has this diamond
Prices start from £911 GBPSave up to £105 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
1.18ct Radiant
£911 GBP