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Round|Lab Grown|IGI

0.98ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG840635084

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840635084

Diamond specifications and retailer prices

From £322 GBP
€411 EUR
As of October 29, 2026
Save £912 GBP (74%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,234 GBP at Helzberg Diamonds · As of October 30, 2026
View at Helzberg Diamonds

About this 0.98ct lab-grown round diamond

This 0.98ct lab-grown round sits in the just-under-one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840635084 or 840635084. Listed at 13 retailers as of October 29, 2026, with prices from £322 to £1,234, a £912 spread on the same certified stone. Helzberg Diamonds lists it at £1,234. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.98
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840635084
Dimensions6.41 × 6.46 × 3.86 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
6.41 mm6.46 mm0.98 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840635084
Side View
Table 59.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.0%

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: £1,234 GBP|Low: £320 GBP|High: £1,234 GBP|Avg: £599 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 6£322 GBP
Retailer 11£326 GBP
Retailer 7£341 GBP
Retailer 5£346 GBP
Retailer 10£351 GBP
Retailer 9£364 GBP
Retailer 12£516 GBP
Retailer 4£646 GBP
Retailer 3£647 GBP
Retailer 8£883 GBP
Retailer 2£894 GBP
Helzberg Diamonds£1,234 GBP

12 data points across 12 retailers

13 retailers£322 GBP to £1,234 GBP

A
Cheapest Retailer
-
£322 GBP
€411 EUR
A
Retailer 2
-
£326 GBP
$437 USD
View
A
Retailer 3
-
£341 GBP
ZAR 7,392 ZAR
View
A
Retailer 4
-
£346 GBP
View
A
Retailer 5
-
£351 GBP
$471 USD
View
B+
Retailer 6
-
£364 GBP
$488 USD
View
B+
Retailer 7
-
£516 GBP
SGD 936 SGD
View
B
Retailer 8
-
£641 GBP
$860 USD
View
B
Retailer 9
-
£646 GBP
$867 USD
View
B
Retailer 10
-
£647 GBP
$868 USD
View
B
Retailer 11
-
£883 GBP
View
B
Retailer 12
-
£894 GBP
$1,200 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJLGOK · Oct 30
£1,234 GBP
$1,656 USD
View
12 more retailers have this diamond
Prices start from £322 GBPSave up to £912 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
0.98ct Round
£322 GBP