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Round|Lab Grown|IGI

1.05ct F IF Round Lab Grown Diamond

EX • F/IF • IGI LG800683279

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800683279

Diamond specifications and retailer prices

From £143 GBP
$191 USD
As of November 1, 2026
Save £738 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £881 GBP at Brilliant Earth · As of October 31, 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 LG800683279 or 800683279. Listed at 18 retailers as of October 31, 2026, with prices from £143 to £881, a £738 spread on the same certified stone. Brilliant Earth lists it at £881. 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 angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800683279
Dimensions6.48 × 6.43 × 4.07 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
6.48 mm6.43 mm1.05 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800683279
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

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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: £881 GBP|Low: £140 GBP|High: £1,030 GBP|Avg: £422 GBP|-14.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 4£143 GBP
Retailer 5£160 GBP
Retailer 7£172 GBP
Retailer 9£299 GBP
Retailer 12£306 GBP
Retailer 14£310 GBP
Retailer 11£321 GBP
Retailer 13£356 GBP
Retailer 15£364 GBP
Retailer 10£432 GBP
Retailer 2£470 GBP
Retailer 3£596 GBP
Retailer 16£609 GBP
Retailer 8£698 GBP
Retailer 6£832 GBP
Brilliant Earth£881 GBP

36 data points across 16 retailers

18 retailers£143 GBP to £881 GBP

A
Cheapest Retailer
-
£143 GBP
$191 USD
A
Retailer 2
-
£160 GBP
$214 USD
View
Final sale: no returns
Retailer 3
-
£172 GBP
$231 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£178 GBP
$238 USD
View
Price last confirmed 48 days ago
A
Retailer 5
-
£299 GBP
€381 EUR
View
A
Retailer 6
-
£306 GBP
ZAR 6,616 ZAR
View
A
Retailer 7
-
£310 GBP
$415 USD
View
A
Retailer 8
-
£321 GBP
View
A
Retailer 9
-
£356 GBP
$477 USD
View
B+
Retailer 10
-
£364 GBP
$488 USD
View
B+
Retailer 11
-
£432 GBP
A$890 AUD
View
B+
Retailer 12
-
£470 GBP
$630 USD
View
Retailer 13
-
£528 GBP
$707 USD
View
Price last confirmed 48 days ago
B
Retailer 14
-
£596 GBP
$798 USD
View
B
Retailer 15
-
£609 GBP
$816 USD
View
Retailer 16
-
£698 GBP
$935 USD
View
Price last confirmed 33 days ago
B
Retailer 17
-
£832 GBP
View
Most Expensive
B
Brilliant Earth
20725977A · Oct 31
£881 GBP
$1,180 USD
View
17 more retailers have this diamond
Prices start from £143 GBPSave up to £738 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
£143 GBP