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Round|Lab Grown|IGI

1.09ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG836614236

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836614236

Diamond specifications and retailer prices

From £175 GBP
$234 USD
As of October 29, 2026
Save £1,276 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,451 GBP at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct 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 LG836614236 or 836614236. Listed at 21 retailers as of October 29, 2026, with prices from £175 to £1,451, a £1,276 spread on the same certified stone. Helzberg Diamonds lists it at £1,451. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836614236
Dimensions6.64 × 6.70 × 3.98 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
6.64 mm6.70 mm1.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836614236
Side View
Table 58.0%Crown 33.3°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.6%

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: £1,451 GBP|Low: £175 GBP|High: £1,451 GBP|Avg: £552 GBP
Helzberg Diamonds
Retailer 2
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Retailer 21
October 30, 2026
Retailer 5£175 GBP
Retailer 7£196 GBP
Retailer 20£203 GBP
Retailer 11£217 GBP
Retailer 18£217 GBP
Retailer 13£351 GBP
Retailer 16£364 GBP
Retailer 3£366 GBP
Retailer 17£372 GBP
Retailer 10£392 GBP
Retailer 6£407 GBP
Retailer 15£408 GBP
Retailer 9£586 GBP
Retailer 12£697 GBP
Retailer 4£699 GBP
Retailer 8£736 GBP
Retailer 21£757 GBP
Retailer 19£802 GBP
Retailer 14£883 GBP
Retailer 2£1,008 GBP
Helzberg Diamonds£1,451 GBP

22 data points across 21 retailers

21 retailers£175 GBP to £1,451 GBP

A
Cheapest Retailer
-
£175 GBP
$234 USD
A
Retailer 2
-
£196 GBP
$262 USD
View
Final sale: no returns
A
Retailer 3
-
£203 GBP
$272 USD
View
A
Retailer 4
-
£217 GBP
$291 USD
View
A
Retailer 5
-
£217 GBP
$291 USD
View
A
Retailer 6
-
£351 GBP
View
A
Retailer 7
-
£364 GBP
€464 EUR
View
A
Retailer 8
-
£366 GBP
$491 USD
View
A
Retailer 9
-
£372 GBP
ZAR 8,063 ZAR
View
A
Retailer 10
-
£392 GBP
$525 USD
View
A
Retailer 11
-
£407 GBP
$546 USD
View
A
Retailer 12
-
£408 GBP
View
B+
Retailer 13
-
£586 GBP
SGD 1,061 SGD
View
B+
Retailer 14
-
£697 GBP
$934 USD
View
B
Retailer 15
-
£699 GBP
$937 USD
View
B+
Retailer 16
-
£736 GBP
$986 USD
View
B+
Retailer 17
-
£757 GBP
$1,014 USD
View
B+
Retailer 18
-
£802 GBP
$1,075 USD
View
Retailer 19
-
£883 GBP
View
Price last confirmed 9 days ago
B
Retailer 20
-
£1,008 GBP
$1,350 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOJMMHKIJM · Oct 31
£1,451 GBP
$1,944 USD
View
20 more retailers have this diamond
Prices start from £175 GBPSave up to £1,276 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
1.09ct Round
£175 GBP