Radiant|Lab Grown|IGI

1.21ct E IF Radiant Lab Grown Diamond

E/IF • IGI LG799649696

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

Certificate IGI LG799649696

Diamond specifications and retailer prices

From £201 GBP
$269 USD
As of October 30, 2026
Save £1,240 GBP (86%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,440 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless) and certified by IGI LG799649696 or 799649696. Listed at 25 retailers as of October 30, 2026, with prices from £201 to £1,440, a £1,240 spread on the same certified stone. Brilliant Earth lists it at £1,440. 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
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799649696
Dimensions7.55 × 5.30 × 3.42 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.55 mm5.30 mm1.21 ctE / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799649696
Side View
Table 65.0%Crown 42.7°Girdle: Slightly ThickPavilion 35°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
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: £1,440 GBP|Low: £193 GBP|High: £1,440 GBP|Avg: £562 GBP|+0.5%
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
November 1, 2026
Retailer 3£201 GBP
Retailer 4£249 GBP
Retailer 6£263 GBP
Retailer 11£369 GBP
Retailer 5£413 GBP
Retailer 10£428 GBP
Retailer 8£445 GBP
Retailer 7£478 GBP
Retailer 9£606 GBP
Retailer 13£632 GBP
Retailer 2£998 GBP
Retailer 12£1,108 GBP
Brilliant Earth£1,440 GBP

34 data points across 13 retailers

25 retailers£201 GBP to £1,440 GBP

A
Cheapest Retailer
-
£201 GBP
$269 USD
A
Retailer 2
-
£225 GBP
$301 USD
View
Final sale: no returns
A
Retailer 3
-
£233 GBP
$312 USD
View
Retailer 4
-
£249 GBP
$334 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£249 GBP
$334 USD
View
A
Retailer 6
-
£263 GBP
View
A
Retailer 7
-
£369 GBP
$495 USD
View
B+
Retailer 8
-
£413 GBP
$553 USD
View
A
Retailer 9
-
£428 GBP
ZAR 9,263 ZAR
View
B+
Retailer 10
-
£436 GBP
$584 USD
View
B+
Retailer 11
-
£445 GBP
€568 EUR
View
B+
Retailer 12
-
£478 GBP
View
Retailer 13
-
£548 GBP
A$1,130 AUD
View
Price last confirmed 121 days ago
B+
Retailer 14
-
£591 GBP
$792 USD
View
B+
Retailer 15
-
£606 GBP
A$1,249 AUD
View
B
Retailer 16
-
£632 GBP
$847 USD
View
B
Retailer 17
-
£801 GBP
$1,073 USD
View
B
Retailer 18
-
£839 GBP
$1,124 USD
View
B
Retailer 19
-
£953 GBP
$1,277 USD
View
B
Retailer 20
-
£967 GBP
View
B
Retailer 21
-
£998 GBP
View
B
Retailer 22
-
£1,055 GBP
$1,414 USD
View
Retailer 23
-
£1,108 GBP
$1,485 USD
View
Price last confirmed 11 days ago
Retailer 24
-
£1,110 GBP
$1,488 USD
View
Price last confirmed 62 days ago
Most Expensive
B
Brilliant Earth
20005272A · Oct 31
£1,440 GBP
$1,930 USD
View
24 more retailers have this diamond
Prices start from £201 GBPSave up to £1,240 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
1.21ct Radiant
£201 GBP