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Radiant|Lab Grown|IGI

1.21ct E VVS1 Radiant Lab Grown Diamond

E/VVS1 • IGI LG665407135

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

Certificate IGI LG665407135

Diamond specifications and retailer prices

From £931 GBP
$1,240 USD
As of October 30, 2026
Save £165 GBP (15%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,096 GBP at Kay Jewelers · As of October 29, 2026
View at Kay Jewelers

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included) and certified by IGI LG665407135 or 665407135. Listed at 2 retailers as of October 29, 2026, with prices from £931 to £1,096, a £165 spread on the same certified stone. Kay Jewelers lists it at £1,096. 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

1.21
Carat
E
Colour
VVS1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665407135
Dimensions7.55 × 5.35 mm
L/W Ratio1.41
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
7.55 mm5.35 mm1.21 ctE / VVS1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665407135
Side View
Table 63.0%Crown 41.8°Girdle: MediumPavilion 34.8°Culet: NoneDepth 66.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £1,096 GBP|Low: £931 GBP|High: £1,382 GBP|Avg: £1,183 GBP|-20.7%
Kay Jewelers
Retailer 2
September 28, 2026
Retailer 2£931 GBP
Kay Jewelers£1,096 GBP

5 data points across 2 retailers

2 retailers£931 GBP to £1,096 GBP

B
Cheapest Retailer
-
£931 GBP
$1,240 USD
Most Expensive
C
Kay Jewelers
255194857 · Oct 29
£1,096 GBP
$1,460 USD
View
1 more retailer has this diamond
Prices start from £931 GBPSave up to £165 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
1.21ct Radiant
£931 GBP