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Round|Lab Grown|IGI

1.05ct F IF Round Lab Grown Diamond

EX • F/IF • IGI LG823605818

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823605818

Diamond specifications and retailer prices

From £155 GBP
$208 USD
As of November 1, 2026
Save £933 GBP (86%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,088 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.05ct lab-grown round diamond

This 1.05ct 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 LG823605818 or 823605818. Listed at 19 retailers as of November 1, 2026, with prices from £155 to £1,088, a £933 spread on the same certified stone. Brilliant Earth lists it at £1,088. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823605818
Dimensions6.46 × 6.49 × 4.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.46 mm6.49 mm1.05 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823605818
Side View
Table 61.0%Crown 34.9°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.2%

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 1
Current: £1,088 GBP|Low: £155 GBP|High: £1,192 GBP|Avg: £486 GBP|-7.0%
Brilliant Earth
Retailer 2
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Retailer 19
November 2, 2026
Retailer 17£155 GBP
Retailer 5£180 GBP
Retailer 8£192 GBP
Retailer 19£192 GBP
Retailer 10£219 GBP
Retailer 18£259 GBP
Retailer 12£318 GBP
Retailer 14£331 GBP
Retailer 13£353 GBP
Retailer 9£368 GBP
Retailer 16£465 GBP
Retailer 2£469 GBP
Retailer 4£527 GBP
Retailer 3£617 GBP
Retailer 7£656 GBP
Retailer 6£665 GBP
Retailer 15£768 GBP
Retailer 11£923 GBP
Brilliant Earth£1,088 GBP

34 data points across 19 retailers

19 retailers£155 GBP to £1,088 GBP

A
Cheapest Retailer
-
£155 GBP
$208 USD
A
Retailer 2
-
£180 GBP
$241 USD
View
A
Retailer 3
-
£192 GBP
$257 USD
View
Retailer 4
-
£192 GBP
$257 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£219 GBP
HK$2,300 HKD
View
A
Retailer 6
-
£259 GBP
$348 USD
View
A
Retailer 7
-
£318 GBP
€406 EUR
View
A
Retailer 8
-
£331 GBP
ZAR 7,180 ZAR
View
B+
Retailer 9
-
£353 GBP
View
B+
Retailer 10
-
£368 GBP
$494 USD
View
B+
Retailer 11
-
£465 GBP
$624 USD
View
B+
Retailer 12
-
£469 GBP
A$968 AUD
View
B+
Retailer 13
-
£527 GBP
SGD 956 SGD
View
B
Retailer 14
-
£617 GBP
$828 USD
View
B
Retailer 15
-
£656 GBP
$881 USD
View
B
Retailer 16
-
£665 GBP
$893 USD
View
B
Retailer 17
-
£768 GBP
View
B
Retailer 18
-
£923 GBP
$1,239 USD
View
Most Expensive
B
Brilliant Earth
21101731A · Nov 1
£1,088 GBP
$1,460 USD
View
18 more retailers have this diamond
Prices start from £155 GBPSave up to £933 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
1.05ct Round
£155 GBP