CaratHunter
Plans
Oval|Lab Grown|IGI

0.51ct E SI1 Oval Lab Grown Diamond

VG • E/SI1 • IGI LG407915446

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407915446

Diamond specifications and retailer prices

From £262 GBP
As of November 5, 2026
Save £322 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,272 GBP at MOH London · As of November 3, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407915446 or 407915446. Listed at 13 retailers as of November 5, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle37.7°
Pavilion angle42.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407915446
Dimensions5.98 × 4.44 × 3.00 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
5.98 mm4.44 mm0.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407915446
Side View
Table 61.5%Crown 37.7°Girdle: STK-THKPavilion 42.7°Culet: NoneDepth 67.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,272 GBP|Low: £184 GBP|High: £1,288 GBP|Avg: £488 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3£184 GBP
Retailer 6£262 GBP
Retailer 7£284 GBP
Retailer 10£294 GBP
Retailer 8£326 GBP
Retailer 11£326 GBP
Retailer 9£522 GBP
Retailer 4£580 GBP
Retailer 2£584 GBP
Retailer 5£955 GBP
MOH London£1,272 GBP

43 data points across 11 retailers

13 retailers£262 GBP to £584 GBP

B+
Cheapest Retailer
-
£262 GBP
B
Retailer 2
-
£284 GBP
View
B
Retailer 3
-
£294 GBP
View
Final sale: no returns
B
Retailer 4
-
£305 GBP
View
B
Retailer 5
-
£326 GBP
View
Retailer 6
-
£326 GBP
View
Price last confirmed 12 days ago
B
Retailer 7
-
£522 GBP
View
B
Retailer 8
-
£580 GBP
View
B
Retailer 9
-
£584 GBP
View
Retailer 10
-
£955 GBP
View
Price under review
Retailer 11
-
£1,047 GBP
View
Price under review
Retailer 12
-
£1,170 GBP
View
Price under review
Most Expensive
MOH London
LG407915446 · Nov 3
£1,272 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £262 GBPSave up to £322 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
£262 GBP