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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG407936480

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407936480

Diamond specifications and retailer prices

From £274 GBP
As of November 5, 2026
Save £332 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,324 GBP at MOH London · As of November 5, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407936480 or 407936480. Listed at 13 retailers as of November 5, 2026, with a 121% 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
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407936480
Dimensions6.01 × 4.47 × 2.82 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.01 mm4.47 mm0.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407936480
Side View
Table 61.0%Crown 35.7°Girdle: THK-VTKPavilion 41.2°Culet: NoneDepth 63.1%

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: £1,324 GBP|Low: £263 GBP|High: £1,344 GBP|Avg: £550 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£274 GBP
Retailer 6£291 GBP
Retailer 9£306 GBP
Retailer 7£340 GBP
Retailer 10£340 GBP
Retailer 8£542 GBP
Retailer 2£607 GBP
Retailer 3£607 GBP
Retailer 4£997 GBP
MOH London£1,324 GBP

46 data points across 10 retailers

13 retailers£274 GBP to £607 GBP

B+
Cheapest Retailer
-
£274 GBP
B
Retailer 2
-
£291 GBP
View
B
Retailer 3
-
£306 GBP
View
Final sale: no returns
B
Retailer 4
-
£318 GBP
View
B
Retailer 5
-
£340 GBP
View
Retailer 6
-
£340 GBP
View
Price last confirmed 12 days ago
B
Retailer 7
-
£542 GBP
View
B
Retailer 8
-
£607 GBP
View
B
Retailer 9
-
£607 GBP
View
Retailer 10
-
£997 GBP
View
Price under review
Retailer 11
-
£1,092 GBP
View
Price under review
Retailer 12
-
£1,202 GBP
View
Price under review
Most Expensive
MOH London
LG407936480 · Nov 5
£1,324 GBP
View
Price under review
12 more retailers have this diamond
Prices start from £274 GBPSave up to £332 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
£274 GBP