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Round|Lab Grown|IGI

1.05ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG729569980

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729569980

Diamond specifications and retailer prices

From £168 GBP
$224 USD
As of October 28, 2026
Save £731 GBP (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,014 GBP at Brilliant Earth · As of October 17, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729569980 or 729569980. Listed at 24 retailers as of October 28, 2026, with a 435% 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
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729569980
Dimensions6.52 × 6.55 × 4.00 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
6.52 mm6.55 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729569980
Side View
Table 56.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.2%

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: Oct 28
Current: £1,014 GBP|Low: £168 GBP|High: £1,014 GBP|Avg: £455 GBP
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
Retailer 17
October 29, 2026
Retailer 7£168 GBP
Retailer 9£211 GBP
Retailer 17£254 GBP
Retailer 10£315 GBP
Retailer 12£322 GBP
Retailer 2£342 GBP
Retailer 5£366 GBP
Retailer 16£377 GBP
Retailer 15£409 GBP
Retailer 14£454 GBP
Retailer 13£458 GBP
Retailer 8£510 GBP
Retailer 11£596 GBP
Retailer 6£642 GBP
Retailer 4£880 GBP
Retailer 3£899 GBP
Brilliant Earth£1,014 GBP

38 data points across 17 retailers

24 retailers£168 GBP to £899 GBP

Retailer 1
-
£151 GBP
$201 USD
Price last confirmed 11 days ago
A
Retailer 2
-
£168 GBP
$224 USD
View
Final sale: no returns
Retailer 3
-
£175 GBP
$233 USD
View
Price last confirmed 9 days ago
Retailer 4
-
£187 GBP
$249 USD
View
Price last confirmed 10 days ago
Retailer 5
-
£188 GBP
$250 USD
View
Price last confirmed 12 days ago
Retailer 6
-
£193 GBP
$257 USD
View
Price last confirmed 44 days ago
A
Retailer 7
-
£211 GBP
HK$2,200 HKD
View
A
Retailer 8
-
£254 GBP
$338 USD
View
A
Retailer 9
-
£315 GBP
€400 EUR
View
A
Retailer 10
-
£322 GBP
ZAR 6,921 ZAR
View
A
Retailer 11
-
£342 GBP
View
A
Retailer 12
-
£366 GBP
$488 USD
View
A
Retailer 13
-
£377 GBP
$502 USD
View
B+
Retailer 14
-
£409 GBP
A$838 AUD
View
Retailer 15
-
£454 GBP
$604 USD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
£458 GBP
A$938 AUD
View
B+
Retailer 17
-
£481 GBP
$641 USD
View
B+
Retailer 18
-
£510 GBP
SGD 917 SGD
View
B+
Retailer 19
-
£596 GBP
A$1,221 AUD
View
Retailer 20
-
£602 GBP
$802 USD
View
Price last confirmed 11 days ago
B+
Retailer 21
-
£642 GBP
$855 USD
View
B
Retailer 22
-
£880 GBP
View
B
Retailer 23
-
£899 GBP
$1,197 USD
View
Most Expensive
Brilliant Earth
16533432A · Oct 17
£1,014 GBP
$1,350 USD
View
Price last confirmed 12 days ago
23 more retailers have this diamond
Prices start from £168 GBPSave up to £731 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
£168 GBP