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Round|Lab Grown|IGI

1.05ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG818644805

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644805

Diamond specifications and retailer prices

From £158 GBP
$210 USD
As of October 29, 2026
Save £1,311 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,469 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.05ct lab-grown round diamond

This 1.05ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818644805 or 818644805. Listed at 24 retailers as of October 27, 2026, with prices from £158 to £1,469, a £1,311 spread on the same certified stone. Queensmith lists it at £1,469. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644805
Dimensions6.56 × 6.60 × 3.95 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
6.56 mm6.60 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644805
Side View
Table 60.0%Crown 33°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.0%

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: Oct 29
Current: £360 GBP|Low: £152 GBP|High: £1,014 GBP|Avg: £431 GBP|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 2£158 GBP
Retailer 4£196 GBP
Retailer 3£264 GBP
Retailer 5£318 GBP
Retailer 7£327 GBP
Retailer 8£336 GBP
Retailer 1£360 GBP
Retailer 9£479 GBP
Retailer 12£506 GBP
Retailer 10£785 GBP
Retailer 6£789 GBP
Retailer 11£1,014 GBP

36 data points across 12 retailers

24 retailers£158 GBP to £1,469 GBP

A
Cheapest Retailer
-
£158 GBP
$210 USD
A
Retailer 2
-
£177 GBP
$236 USD
View
Final sale: no returns
A
Retailer 3
-
£183 GBP
$244 USD
View
A
Retailer 4
-
£196 GBP
$261 USD
View
A
Retailer 5
-
£196 GBP
$261 USD
View
A
Retailer 6
-
£221 GBP
HK$2,300 HKD
View
A
Retailer 7
-
£264 GBP
$352 USD
View
A
Retailer 8
-
£318 GBP
View
A
Retailer 9
-
£327 GBP
€415 EUR
View
A
Retailer 10
-
£336 GBP
ZAR 7,237 ZAR
View
A
Retailer 11
-
£360 GBP
View
A
Retailer 12
-
£373 GBP
$497 USD
View
A
Retailer 13
-
£380 GBP
$506 USD
View
B+
Retailer 14
-
£479 GBP
A$981 AUD
View
B+
Retailer 15
-
£506 GBP
$674 USD
View
B+
Retailer 16
-
£531 GBP
SGD 956 SGD
View
B+
Retailer 17
-
£629 GBP
$838 USD
View
B+
Retailer 18
-
£669 GBP
$891 USD
View
B+
Retailer 19
-
£669 GBP
$891 USD
View
Retailer 20
-
£785 GBP
$1,045 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
-
£789 GBP
View
B
Retailer 22
-
£921 GBP
$1,227 USD
View
Retailer 23
-
£1,014 GBP
$1,350 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Queensmith
LG818644805 · Oct 27
£1,469 GBP
View
23 more retailers have this diamond
Prices start from £158 GBPSave up to £1,311 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
£158 GBP