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Round|Lab Grown|IGI

1.20ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG789630364

Shape and cutting style on the report: Round brilliant

Certificate IGI LG789630364

Diamond specifications and retailer prices

From £139 GBP
$186 USD
As of October 29, 2026
Save £1,197 GBP (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,336 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 LG789630364 or 789630364. Listed at 17 retailers as of October 29, 2026, with prices from £139 to £1,336, a £1,197 spread on the same certified stone. Do Amore Diamonds lists it at £1,336. 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 angle32.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789630364
Dimensions6.91 × 6.88 × 4.17 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
6.91 mm6.88 mm1.20 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789630364
Side View
Table 56.0%Crown 32.9°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,336 GBP|Low: £110 GBP|High: £1,336 GBP|Avg: £480 GBP
Do Amore Diamonds
Retailer 2
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Retailer 17
October 27, 2026
Retailer 5£156 GBP
Retailer 4£161 GBP
Retailer 8£175 GBP
Retailer 9£288 GBP
Retailer 3£293 GBP
Retailer 2£296 GBP
Retailer 17£303 GBP
Retailer 6£363 GBP
Retailer 14£363 GBP
Retailer 16£412 GBP
Retailer 10£421 GBP
Retailer 12£556 GBP
Retailer 15£684 GBP
Retailer 11£810 GBP
Retailer 13£818 GBP
Retailer 7£1,202 GBP
Do Amore Diamonds£1,336 GBP

20 data points across 17 retailers

17 retailers£139 GBP to £1,336 GBP

A
Cheapest Retailer
-
£139 GBP
$186 USD
A
Retailer 2
-
£156 GBP
$209 USD
View
Final sale: no returns
A
Retailer 3
-
£161 GBP
$216 USD
View
A
Retailer 4
-
£172 GBP
$231 USD
View
A
Retailer 5
-
£172 GBP
$231 USD
View
A
Retailer 6
-
£296 GBP
ZAR 6,411 ZAR
View
A
Retailer 7
-
£303 GBP
$406 USD
View
Retailer 8
-
£363 GBP
$486 USD
View
Price last confirmed 29 days ago
A
Retailer 9
-
£363 GBP
$486 USD
View
A
Retailer 10
-
£412 GBP
$552 USD
View
A
Retailer 11
-
£421 GBP
A$867 AUD
View
B+
Retailer 12
-
£555 GBP
$743 USD
View
B+
Retailer 13
-
£556 GBP
$745 USD
View
B+
Retailer 14
-
£684 GBP
$916 USD
View
B+
Retailer 15
-
£810 GBP
View
B
Retailer 16
-
£818 GBP
$1,096 USD
View
Most Expensive
B
Do Amore Diamonds
27-1AE14DD43 · Oct 29
£1,336 GBP
$1,790 USD
View
16 more retailers have this diamond
Prices start from £139 GBPSave up to £1,197 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
£139 GBP