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Round|Lab Grown|IGI

1.00ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG837677766

Shape and cutting style on the report: Round brilliant

Certificate IGI LG837677766

Diamond specifications and retailer prices

From £222 GBP
As of November 4, 2026
Save £741 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £963 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG837677766 or 837677766. Listed at 10 retailers as of November 4, 2026, with prices from £222 to £963, a £741 spread on the same certified stone. Brilliant Earth lists it at £963. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837677766
Dimensions6.45 × 6.40 × 3.97 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
6.45 mm6.40 mm1.00 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837677766
Side View
Table 57.0%Crown 35.6°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.8%

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: Nov 4
Current: £963 GBP|Low: £222 GBP|High: £1,274 GBP|Avg: £493 GBP|-24.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 10£222 GBP
Retailer 5£278 GBP
Retailer 2£290 GBP
Retailer 8£330 GBP
Retailer 7£341 GBP
Retailer 6£519 GBP
Retailer 9£566 GBP
Retailer 4£622 GBP
Retailer 3£764 GBP
Brilliant Earth£963 GBP

43 data points across 10 retailers

10 retailers£222 GBP to £963 GBP

A
Cheapest Retailer
-
£222 GBP
A
Retailer 2
-
£278 GBP
View
A
Retailer 3
-
£290 GBP
View
B+
Retailer 4
-
£330 GBP
View
B+
Retailer 5
-
£341 GBP
View
Retailer 6
-
£519 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£566 GBP
View
B+
Retailer 8
-
£622 GBP
View
B
Retailer 9
-
£764 GBP
View
Most Expensive
B
Brilliant Earth
21381500A · Nov 4
£963 GBP
$1,300 USD
View
9 more retailers have this diamond
Prices start from £222 GBPSave up to £741 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
1.00ct Round
£222 GBP