Radiant|Lab Grown|IGI

0.50ct F SI1 Radiant Lab Grown Diamond

VG • F/SI1 • IGI LG559281534

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG559281534

Diamond specifications and retailer prices

From £92 GBP
$123 USD
As of November 2, 2026
Save £316 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £952 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown radiant diamond

This 0.5ct lab-grown radiant sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG559281534 or 559281534. Listed at 12 retailers as of October 31, 2026, with a 345% 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

0.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.1°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG559281534
Dimensions5.62 × 4.06 × 2.47 mm
L/W Ratio1.38
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
5.62 mm4.06 mm0.50 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG559281534
Side View
Table 59.0%Crown 39.1°Girdle: MED-STKPavilion 31.5°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £952 GBP|Low: £88 GBP|High: £963 GBP|Avg: £287 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£92 GBP
Retailer 10£107 GBP
Retailer 6£122 GBP
Retailer 9£122 GBP
Retailer 11£153 GBP
Retailer 3£220 GBP
Retailer 5£236 GBP
Retailer 8£275 GBP
Retailer 4£340 GBP
Retailer 7£366 GBP
Retailer 12£408 GBP
MOH London£952 GBP

29 data points across 12 retailers

12 retailers£92 GBP to £408 GBP

A
Cheapest Retailer
-
£92 GBP
$123 USD
A
Retailer 2
-
£107 GBP
$143 USD
View
Retailer 3
-
£122 GBP
$163 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£122 GBP
$163 USD
View
B+
Retailer 5
-
£153 GBP
$205 USD
View
B+
Retailer 6
-
£220 GBP
$295 USD
View
B
Retailer 7
-
£236 GBP
View
B
Retailer 8
-
£275 GBP
View
B
Retailer 9
-
£340 GBP
$455 USD
View
B
Retailer 10
-
£366 GBP
$491 USD
View
B
Retailer 11
-
£408 GBP
$547 USD
View
Most Expensive
MOH London
LG559281534 · Nov 1
£952 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £92 GBPSave up to £316 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
0.50ct Radiant
£92 GBP