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Oval|Lab Grown|IGI

1.20ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG778610912

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG778610912

Diamond specifications and retailer prices

From £168 GBP
$224 USD
As of October 30, 2026
Save £1,244 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,412 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.2ct lab-grown oval diamond

This 1.2ct lab-grown oval 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 LG778610912 or 778610912. Listed at 21 retailers as of October 29, 2026, with prices from £168 to £1,412, a £1,244 spread on the same certified stone. Brilliant Earth lists it at £1,412. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778610912
Dimensions8.80 × 5.93 × 3.67 mm
L/W Ratio1.48
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
8.80 mm5.93 mm1.20 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778610912
Side View
Table 60.0%Crown 35.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.9%

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 30
Current: £1,412 GBP|Low: £142 GBP|High: £1,412 GBP|Avg: £529 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
October 30, 2026
Retailer 2£168 GBP
Retailer 3£263 GBP
Retailer 13£315 GBP
Retailer 10£320 GBP
Retailer 8£342 GBP
Retailer 5£397 GBP
Retailer 4£427 GBP
Retailer 11£456 GBP
Retailer 15£569 GBP
Retailer 14£601 GBP
Retailer 6£640 GBP
Retailer 9£876 GBP
Retailer 7£897 GBP
Retailer 12£1,096 GBP
Brilliant Earth£1,412 GBP

37 data points across 15 retailers

21 retailers£168 GBP to £1,412 GBP

Retailer 1
-
£150 GBP
$200 USD
Price last confirmed 19 days ago
Retailer 2
-
£152 GBP
$202 USD
View
Price last confirmed 36 days ago
A
Retailer 3
-
£168 GBP
$224 USD
View
Final sale: no returns
Retailer 4
-
£176 GBP
$234 USD
View
Price last confirmed 35 days ago
Retailer 5
-
£185 GBP
$247 USD
View
Price last confirmed 35 days ago
Retailer 6
-
£186 GBP
$248 USD
View
Price last confirmed 22 days ago
Retailer 7
-
£186 GBP
$248 USD
View
Price last confirmed 27 days ago
B+
Retailer 8
-
£263 GBP
$350 USD
View
A
Retailer 9
-
£320 GBP
ZAR 6,892 ZAR
View
A
Retailer 10
-
£342 GBP
View
A
Retailer 11
-
£397 GBP
$529 USD
View
A
Retailer 12
-
£427 GBP
$568 USD
View
A
Retailer 13
-
£456 GBP
A$934 AUD
View
B+
Retailer 14
-
£569 GBP
$758 USD
View
Retailer 15
-
£600 GBP
$799 USD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£601 GBP
$801 USD
View
B+
Retailer 17
-
£640 GBP
$852 USD
View
B+
Retailer 18
-
£876 GBP
View
B
Retailer 19
-
£897 GBP
$1,195 USD
View
Retailer 20
-
£1,096 GBP
$1,460 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
18047805A · Oct 29
£1,412 GBP
$1,880 USD
View
20 more retailers have this diamond
Prices start from £168 GBPSave up to £1,244 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 Oval
£168 GBP