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Oval|Lab Grown|IGI

0.51ct E FL Oval Lab Grown Diamond

ID • E/FL • IGI LG831697397

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG831697397

Diamond specifications and retailer prices

From £991 GBP
$1,320 USD
As of October 29, 2026
Save £149 GBP (13%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,141 GBP at Loose Grown Diamond · As of October 28, 2026
View at Loose Grown Diamond

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831697397 or 831697397. Listed at 4 retailers as of October 28, 2026, with prices from £991 to £1,141, a £149 spread on the same certified stone. Loose Grown Diamond lists it at £1,141. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831697397
Dimensions6.37 × 4.41 × 2.70 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
6.37 mm4.41 mm0.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831697397
Side View
Table 62.0%Crown 42.7°Girdle: MED-STKPavilion 37.9°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,141 GBP|Low: £991 GBP|High: £2,687 GBP|Avg: £1,400 GBP
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 4£991 GBP
Retailer 2£1,082 GBP
Retailer 5£1,100 GBP
Loose Grown Diamond£1,141 GBP
Retailer 3£2,666 GBP

29 data points across 5 retailers

4 retailers£991 GBP to £1,141 GBP

B+
Cheapest Retailer
-
£991 GBP
$1,320 USD
B
Retailer 2
-
£1,082 GBP
View
Most Expensive
B
Loose Grown Diamond
831697397 · Oct 28
£1,141 GBP
$1,519 USD
View
2 more retailers have this diamond
Prices start from £991 GBPSave up to £149 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.

B+
0.51ct Oval
£991 GBP