Radiant|Lab Grown|IGI

0.51ct J VS1 Radiant Lab Grown Diamond

VG • J/VS1 • IGI LG375961157

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

Certificate IGI LG375961157

Diamond specifications and retailer prices

From £204 GBP
$274 USD
As of October 30, 2026
Save £612 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,024 GBP at MOH London · As of October 29, 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 J colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG375961157 or 375961157. Listed at 11 retailers as of October 28, 2026, with a 299% 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
J
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG375961157
Dimensions5.10 × 4.04 × 2.72 mm
L/W Ratio1.26
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa.
Top View
5.10 mm4.04 mm0.51 ctJ / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG375961157
Side View
Table 65.5%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.3%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £1,024 GBP|Low: £140 GBP|High: £1,030 GBP|Avg: £443 GBP|+0.6%
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
Retailer 14
October 30, 2026
Retailer 6£140 GBP
Retailer 10£204 GBP
Retailer 14£237 GBP
Retailer 2£246 GBP
Retailer 3£254 GBP
Retailer 11£254 GBP
Retailer 4£373 GBP
Retailer 13£421 GBP
Retailer 7£459 GBP
Retailer 8£472 GBP
Retailer 5£518 GBP
Retailer 9£781 GBP
Retailer 12£816 GBP
MOH London£1,024 GBP

25 data points across 14 retailers

11 retailers£204 GBP to £816 GBP

A
Cheapest Retailer
-
£204 GBP
$274 USD
A
Retailer 2
-
£237 GBP
$318 USD
View
A
Retailer 3
-
£246 GBP
$330 USD
View
A
Retailer 4
-
£254 GBP
$340 USD
View
A
Retailer 5
-
£254 GBP
$340 USD
View
B+
Retailer 6
-
£421 GBP
$564 USD
View
B+
Retailer 7
-
£459 GBP
ZAR 9,944 ZAR
View
B+
Retailer 8
-
£472 GBP
€602 EUR
View
C
Retailer 9
-
£781 GBP
$1,046 USD
View
C
Retailer 10
-
£816 GBP
$1,094 USD
View
Most Expensive
MOH London
LG375961157 · Oct 29
£1,024 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £204 GBPSave up to £612 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
£204 GBP