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Oval|Lab Grown|IGI

1.21ct F VS1 Oval Lab Grown Diamond

EX • F/VS1 • IGI LG613378018

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG613378018

Diamond specifications and retailer prices

From £316 GBP
As of November 4, 2026
Save £603 GBP (66%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £919 GBP at Jared · As of November 4, 2026
View at Jared

About this 1.21ct lab-grown oval diamond

This 1.21ct lab-grown oval sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG613378018 or 613378018. Listed at 4 retailers as of November 4, 2026, with prices from £316 to £919, a £603 spread on the same certified stone. Jared lists it at £919. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613378018
Dimensions8.69 × 6.00 × 3.74 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.69 mm6.00 mm1.21 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613378018
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £919 GBP|Low: £289 GBP|High: £1,200 GBP|Avg: £568 GBP|-23.5%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 2£316 GBP
Retailer 7£330 GBP
Retailer 5£339 GBP
Retailer 8£394 GBP
Retailer 9£563 GBP
Retailer 6£696 GBP
Retailer 4£717 GBP
Retailer 3£786 GBP
Jared£919 GBP

13 data points across 9 retailers

4 retailers£316 GBP to £919 GBP

A
Cheapest Retailer
-
£316 GBP
B
Retailer 2
-
£696 GBP
View
Retailer 3
-
£786 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Jared
149884440 · Nov 4
£919 GBP
$1,240 USD
View
3 more retailers have this diamond
Prices start from £316 GBPSave up to £603 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
£316 GBP