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Round|Lab Grown|IGI

1.22ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG840634909

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840634909

Diamond specifications and retailer prices

From £194 GBP
$259 USD
As of October 29, 2026
Save £1,416 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,610 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634909 or 840634909. Listed at 22 retailers as of October 29, 2026, with prices from £194 to £1,610, a £1,416 spread on the same certified stone. Helzberg Diamonds lists it at £1,610. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634909
Dimensions6.88 × 6.94 × 4.19 mm
L/W Ratio1.01
Girdle conditionFaceted
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
6.88 mm6.94 mm1.22 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634909
Side View
Table 59.0%Crown 33.3°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,610 GBP|Low: £194 GBP|High: £1,610 GBP|Avg: £636 GBP
Helzberg Diamonds
Retailer 2
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October 30, 2026
Retailer 8£194 GBP
Retailer 4£218 GBP
Retailer 22£225 GBP
Retailer 5£241 GBP
Retailer 20£241 GBP
Retailer 19£372 GBP
Retailer 2£390 GBP
Retailer 16£398 GBP
Retailer 9£402 GBP
Retailer 18£414 GBP
Retailer 3£430 GBP
Retailer 13£459 GBP
Retailer 21£502 GBP
Retailer 6£740 GBP
Retailer 11£775 GBP
Retailer 14£777 GBP
Retailer 7£813 GBP
Retailer 15£845 GBP
Retailer 17£971 GBP
Retailer 10£1,141 GBP
Retailer 12£1,307 GBP
Helzberg Diamonds£1,610 GBP

15 data points across 22 retailers

22 retailers£194 GBP to £1,610 GBP

A
Cheapest Retailer
-
£194 GBP
$259 USD
A
Retailer 2
-
£218 GBP
$290 USD
View
Final sale: no returns
A
Retailer 3
-
£225 GBP
$300 USD
View
A
Retailer 4
-
£241 GBP
$321 USD
View
A
Retailer 5
-
£241 GBP
$321 USD
View
A
Retailer 6
-
£372 GBP
$495 USD
View
A
Retailer 7
-
£390 GBP
View
A
Retailer 8
-
£398 GBP
€505 EUR
View
A
Retailer 9
-
£402 GBP
$535 USD
View
A
Retailer 10
-
£414 GBP
ZAR 8,910 ZAR
View
A
Retailer 11
-
£430 GBP
$572 USD
View
A
Retailer 12
-
£459 GBP
View
B+
Retailer 13
-
£502 GBP
$668 USD
View
B+
Retailer 14
-
£740 GBP
$986 USD
View
B+
Retailer 15
-
£775 GBP
$1,032 USD
View
B+
Retailer 16
-
£777 GBP
SGD 1,399 SGD
View
B+
Retailer 17
-
£813 GBP
$1,083 USD
View
B
Retailer 18
-
£845 GBP
$1,125 USD
View
B+
Retailer 19
-
£971 GBP
View
Retailer 20
-
£1,141 GBP
$1,520 USD
View
Price last confirmed 12 days ago
B
Retailer 21
-
£1,307 GBP
$1,740 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJKPGP · Oct 30
£1,610 GBP
$2,144 USD
View
21 more retailers have this diamond
Prices start from £194 GBPSave up to £1,416 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
1.22ct Round
£194 GBP