Radiant|Lab Grown|IGI

0.51ct H SI2 Radiant Lab Grown Diamond

VG • H/SI2 • IGI LG539229152

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

Certificate IGI LG539229152

Diamond specifications and retailer prices

From £93 GBP
$124 USD
As of October 30, 2026
Save £870 GBP (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £962 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG539229152 or 539229152. Listed at 13 retailers as of October 26, 2026, with prices from £93 to £962, a £870 spread on the same certified stone. MOH London lists it at £962. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle31°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539229152
Dimensions5.26 × 3.87 × 2.73 mm
L/W Ratio1.36
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.26 mm3.87 mm0.51 ctH / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG539229152
Side View
Table 62.0%Crown 38°Girdle: THK-VTKPavilion 31°Culet: NoneDepth 70.5%

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: Oct 30
Current: £962 GBP|Low: £89 GBP|High: £972 GBP|Avg: £265 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 8£93 GBP
Retailer 4£104 GBP
Retailer 12£107 GBP
Retailer 9£122 GBP
Retailer 13£122 GBP
Retailer 2£209 GBP
Retailer 10£220 GBP
Retailer 5£229 GBP
Retailer 6£278 GBP
Retailer 3£285 GBP
Retailer 11£369 GBP
Retailer 7£390 GBP
MOH London£962 GBP

18 data points across 13 retailers

13 retailers£93 GBP to £962 GBP

A
Cheapest Retailer
-
£93 GBP
$124 USD
B+
Retailer 2
-
£104 GBP
$139 USD
View
Final sale: no returns
B+
Retailer 3
-
£107 GBP
$144 USD
View
B+
Retailer 4
-
£122 GBP
$164 USD
View
B+
Retailer 5
-
£122 GBP
$164 USD
View
B+
Retailer 6
-
£209 GBP
$280 USD
View
B+
Retailer 7
-
£220 GBP
$295 USD
View
B+
Retailer 8
-
£229 GBP
HK$2,400 HKD
View
B
Retailer 9
-
£278 GBP
View
B
Retailer 10
-
£285 GBP
$382 USD
View
B
Retailer 11
-
£369 GBP
$495 USD
View
B
Retailer 12
-
£390 GBP
$523 USD
View
Most Expensive
C
MOH London
LG539229152 · Oct 26
£962 GBP
View
12 more retailers have this diamond
Prices start from £93 GBPSave up to £870 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
0.51ct Radiant
£93 GBP