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Round|Lab Grown|IGI

1.18ct E FL Round Lab Grown Diamond

EX • E/FL

Diamond specifications and retailer prices

From £173 GBP
$232 USD
As of October 29, 2026
Save £924 GBP (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,097 GBP at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.18ct lab-grown round diamond

This 1.18ct 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. Listed at 5 retailers as of October 29, 2026, with prices from £173 to £1,097, a £924 spread on the same certified stone. Blue Nile lists it at £1,097. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions6.79 × 6.83 × 4.11 mm
L/W Ratio1.01
Top View
6.79 mm6.83 mm1.18 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.5%

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: £1,097 GBP|Low: £173 GBP|High: £1,889 GBP|Avg: £766 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 24, 2026
Retailer 3£173 GBP
Retailer 2£201 GBP
Retailer 4£393 GBP
Retailer 5£762 GBP
Blue Nile£1,097 GBP
Retailer 6£1,889 GBP

11 data points across 6 retailers

5 retailers£173 GBP to £1,097 GBP

A
Cheapest Retailer
-
£173 GBP
$232 USD
A
Retailer 2
-
£201 GBP
$269 USD
View
A
Retailer 3
-
£393 GBP
$526 USD
View
B+
Retailer 4
-
£762 GBP
$1,021 USD
View
Most Expensive
B
Blue Nile
30352873 · Oct 29
£1,097 GBP
$1,470 USD
View
4 more retailers have this diamond
Prices start from £173 GBPSave up to £924 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
1.18ct Round
£173 GBP