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Oval|Lab Grown|IGI

1.68ct E IF Oval Lab Grown Diamond

ID • E/IF • IGI LG783613978

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG783613978

Diamond specifications and retailer prices

From £347 GBP
$465 USD
As of October 30, 2026
Save £2,593 GBP (88%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,941 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.68ct lab-grown oval diamond

This 1.68ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG783613978 or 783613978. Listed at 10 retailers as of October 30, 2026, with prices from £347 to £2,941, a £2,593 spread on the same certified stone. Brilliant Earth lists it at £2,941. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.68
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783613978
Dimensions9.62 × 6.66 × 4.14 mm
L/W Ratio1.44
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
9.62 mm6.66 mm1.68 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783613978
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.2%

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: £2,941 GBP|Low: £315 GBP|High: £3,067 GBP|Avg: £1,028 GBP|-4.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10£315 GBP
Retailer 8£347 GBP
Retailer 3£455 GBP
Retailer 7£458 GBP
Retailer 2£495 GBP
Retailer 6£868 GBP
Retailer 5£912 GBP
Retailer 4£1,041 GBP
Retailer 9£1,929 GBP
Brilliant Earth£2,941 GBP

39 data points across 10 retailers

10 retailers£347 GBP to £2,941 GBP

Retailer 1
-
£315 GBP
HK$3,300 HKD
Price last confirmed 58 days ago
B+
Retailer 2
-
£347 GBP
$465 USD
View
A
Retailer 3
-
£455 GBP
View
A
Retailer 4
-
£458 GBP
$614 USD
View
A
Retailer 5
-
£495 GBP
€632 EUR
View
B+
Retailer 6
-
£868 GBP
$1,163 USD
View
B+
Retailer 7
-
£912 GBP
$1,222 USD
View
B+
Retailer 8
-
£1,041 GBP
View
Retailer 9
-
£1,929 GBP
$2,585 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20286509A · Oct 31
£2,941 GBP
$3,940 USD
View
9 more retailers have this diamond
Prices start from £347 GBPSave up to £2,593 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
1.68ct Oval
£347 GBP