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Oval|Lab Grown|IGI

1.21ct E IF Oval Lab Grown Diamond

EX • E/IF • IGI LG815650034

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG815650034

Diamond specifications and retailer prices

From £261 GBP
$348 USD
As of October 30, 2026
Save £622 GBP (70%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £883 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown oval diamond

This 1.21ct 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 LG815650034 or 815650034. Listed at 6 retailers as of October 29, 2026, with prices from £261 to £883, a £622 spread on the same certified stone. MOH London lists it at £883. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815650034
Dimensions8.54 × 5.87 × 3.77 mm
L/W Ratio1.45
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
8.54 mm5.87 mm1.21 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815650034
Side View
Table 58.0%Crown 37°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 64.2%

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 30
Current: £883 GBP|Low: £261 GBP|High: £889 GBP|Avg: £510 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 4£261 GBP
Retailer 2£345 GBP
Retailer 5£372 GBP
Retailer 3£577 GBP
Retailer 6£644 GBP
MOH London£883 GBP

20 data points across 6 retailers

6 retailers£261 GBP to £883 GBP

B+
Cheapest Retailer
-
£261 GBP
$348 USD
A
Retailer 2
-
£345 GBP
View
A
Retailer 3
-
£372 GBP
$495 USD
View
B+
Retailer 4
-
£577 GBP
$769 USD
View
B+
Retailer 5
-
£644 GBP
$858 USD
View
Most Expensive
B
MOH London
LG815650034 · Oct 29
£883 GBP
View
5 more retailers have this diamond
Prices start from £261 GBPSave up to £622 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
1.21ct Oval
£261 GBP