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Oval|Lab Grown|IGI

0.50ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG499115863

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG499115863

Diamond specifications and retailer prices

From £254 GBP
$340 USD
As of October 31, 2026
Save £342 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,302 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown oval diamond

This 0.5ct lab-grown oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499115863 or 499115863. Listed at 12 retailers as of October 31, 2026, with a 135% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499115863
Dimensions6.43 × 4.47 × 2.78 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
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
6.43 mm4.47 mm0.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499115863
Side View
Table 63.0%Crown 35.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 62.2%

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: Oct 31
Current: £1,302 GBP|Low: £254 GBP|High: £1,317 GBP|Avg: £534 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3£254 GBP
Retailer 6£269 GBP
Retailer 9£301 GBP
Retailer 7£334 GBP
Retailer 10£334 GBP
Retailer 8£534 GBP
Retailer 4£595 GBP
Retailer 2£596 GBP
Retailer 5£977 GBP
MOH London£1,302 GBP

41 data points across 10 retailers

12 retailers£254 GBP to £596 GBP

B+
Cheapest Retailer
-
£254 GBP
$340 USD
B+
Retailer 2
-
£269 GBP
$360 USD
View
B+
Retailer 3
-
£301 GBP
$403 USD
View
Final sale: no returns
B+
Retailer 4
-
£312 GBP
$418 USD
View
B+
Retailer 5
-
£334 GBP
$447 USD
View
Retailer 6
-
£334 GBP
$447 USD
View
Price last confirmed 7 days ago
B
Retailer 7
-
£534 GBP
$715 USD
View
B
Retailer 8
-
£595 GBP
€759 EUR
View
B
Retailer 9
-
£596 GBP
View
Retailer 10
-
£977 GBP
$1,309 USD
View
Price under review
Retailer 11
-
£1,071 GBP
$1,435 USD
View
Price under review
Most Expensive
MOH London
LG499115863 · Nov 1
£1,302 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £254 GBPSave up to £342 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+
0.50ct Oval
£254 GBP