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Round|Lab Grown|IGI

1.20ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG812621638

Shape and cutting style on the report: Round brilliant

Certificate IGI LG812621638

Diamond specifications and retailer prices

From £164 GBP
$220 USD
As of October 30, 2026
Save £1,000 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,164 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.2ct lab-grown round diamond

This 1.2ct 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 LG812621638 or 812621638. Listed at 18 retailers as of October 29, 2026, with prices from £164 to £1,164, a £1,000 spread on the same certified stone. Brilliant Earth lists it at £1,164. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621638
Dimensions6.92 × 6.89 × 4.15 mm
L/W Ratio1.00
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
6.92 mm6.89 mm1.20 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621638
Side View
Table 59.0%Crown 33.3°Girdle: THN-MEDPavilion 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 30
Current: £1,164 GBP|Low: £116 GBP|High: £1,202 GBP|Avg: £513 GBP|-3.1%
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
October 31, 2026
Retailer 3£164 GBP
Retailer 7£188 GBP
Retailer 15£257 GBP
Retailer 9£310 GBP
Retailer 10£313 GBP
Retailer 2£329 GBP
Retailer 4£386 GBP
Retailer 11£444 GBP
Retailer 8£462 GBP
Retailer 14£469 GBP
Retailer 5£625 GBP
Retailer 12£853 GBP
Retailer 6£883 GBP
Retailer 13£896 GBP
Brilliant Earth£1,164 GBP

36 data points across 15 retailers

18 retailers£164 GBP to £1,164 GBP

Retailer 1
-
£147 GBP
$197 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£164 GBP
$220 USD
View
Final sale: no returns
Retailer 3
-
£182 GBP
$244 USD
View
Price last confirmed 19 days ago
Retailer 4
-
£182 GBP
$244 USD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
£257 GBP
$345 USD
View
A
Retailer 6
-
£310 GBP
€395 EUR
View
A
Retailer 7
-
£313 GBP
ZAR 6,769 ZAR
View
A
Retailer 8
-
£329 GBP
View
A
Retailer 9
-
£386 GBP
$518 USD
View
A
Retailer 10
-
£444 GBP
A$916 AUD
View
A
Retailer 11
-
£462 GBP
$619 USD
View
B+
Retailer 12
-
£469 GBP
$629 USD
View
Retailer 13
-
£585 GBP
$784 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
£625 GBP
$838 USD
View
B
Retailer 15
-
£853 GBP
View
B
Retailer 16
-
£883 GBP
$1,183 USD
View
Retailer 17
-
£896 GBP
$1,200 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
20913343A · Oct 29
£1,164 GBP
$1,560 USD
View
17 more retailers have this diamond
Prices start from £164 GBPSave up to £1,000 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
1.20ct Round
£164 GBP