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Round|Lab Grown|IGI

1.05ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG727575191

Shape and cutting style on the report: Round brilliant

Certificate IGI LG727575191

Diamond specifications and retailer prices

From £139 GBP
$186 USD
As of November 1, 2026
Save £665 GBP (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,209 GBP at Brilliant Earth · As of October 24, 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 LG727575191 or 727575191. Listed at 21 retailers as of November 1, 2026, with a 479% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727575191
Dimensions6.60 × 6.63 × 3.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.60 mm6.63 mm1.05 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727575191
Side View
Table 58.0%Crown 33.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 59.7%

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: £1,209 GBP|Low: £139 GBP|High: £1,411 GBP|Avg: £432 GBP|-14.3%
Brilliant Earth
Retailer 2
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Retailer 20
November 2, 2026
Retailer 4£139 GBP
Retailer 20£160 GBP
Retailer 8£172 GBP
Retailer 9£172 GBP
Retailer 10£231 GBP
Retailer 16£291 GBP
Retailer 14£297 GBP
Retailer 12£301 GBP
Retailer 13£311 GBP
Retailer 3£363 GBP
Retailer 17£392 GBP
Retailer 6£407 GBP
Retailer 18£410 GBP
Retailer 2£419 GBP
Retailer 11£466 GBP
Retailer 19£550 GBP
Retailer 5£553 GBP
Retailer 7£593 GBP
Retailer 15£804 GBP
Brilliant Earth£1,209 GBP

38 data points across 20 retailers

21 retailers£139 GBP to £804 GBP

A
Cheapest Retailer
-
£139 GBP
$186 USD
A
Retailer 2
-
£160 GBP
$215 USD
View
A
Retailer 3
-
£172 GBP
$230 USD
View
Retailer 4
-
£172 GBP
$230 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£231 GBP
$310 USD
View
A
Retailer 6
-
£291 GBP
€371 EUR
View
A
Retailer 7
-
£297 GBP
ZAR 6,424 ZAR
View
Retailer 8
-
£301 GBP
View
Price last confirmed 18 days ago
A
Retailer 9
-
£311 GBP
View
B+
Retailer 10
-
£363 GBP
$486 USD
View
B+
Retailer 11
-
£392 GBP
A$808 AUD
View
B+
Retailer 12
-
£407 GBP
$546 USD
View
B+
Retailer 13
-
£410 GBP
$550 USD
View
B+
Retailer 14
-
£419 GBP
A$864 AUD
View
B+
Retailer 15
-
£466 GBP
SGD 844 SGD
View
B+
Retailer 16
-
£550 GBP
A$1,133 AUD
View
B+
Retailer 17
-
£553 GBP
$741 USD
View
B
Retailer 18
-
£593 GBP
$795 USD
View
Retailer 19
-
£746 GBP
$999 USD
View
Price last confirmed 91 days ago
B
Retailer 20
-
£804 GBP
View
Most Expensive
Brilliant Earth
18208684A · Oct 24
£1,209 GBP
$1,620 USD
View
Price last confirmed 8 days ago
20 more retailers have this diamond
Prices start from £139 GBPSave up to £665 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
£139 GBP