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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 $486 NZD
$274 USD
As of October 30, 2026
Save $1,455 NZD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,434 NZD 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 30, 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: $2,434 NZD|Low: $333 NZD|High: $2,449 NZD|Avg: $1,054 NZD|+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$333 NZD
Retailer 10$486 NZD
Retailer 14$564 NZD
Retailer 2$586 NZD
Retailer 3$603 NZD
Retailer 11$603 NZD
Retailer 4$887 NZD
Retailer 13$1,001 NZD
Retailer 7$1,092 NZD
Retailer 8$1,122 NZD
Retailer 5$1,231 NZD
Retailer 9$1,856 NZD
Retailer 12$1,941 NZD
MOH London$2,434 NZD

25 data points across 14 retailers

11 retailers$486 NZD to $1,941 NZD

A
Cheapest Retailer
-
$486 NZD
$274 USD
A
Retailer 2
-
$564 NZD
$318 USD
View
A
Retailer 3
-
$586 NZD
$330 USD
View
A
Retailer 4
-
$603 NZD
$340 USD
View
A
Retailer 5
-
$603 NZD
$340 USD
View
B+
Retailer 6
-
$1,001 NZD
$564 USD
View
B+
Retailer 7
-
$1,092 NZD
ZAR 9,944 ZAR
View
B+
Retailer 8
-
$1,122 NZD
€602 EUR
View
C
Retailer 9
-
$1,856 NZD
$1,046 USD
View
C
Retailer 10
-
$1,941 NZD
$1,094 USD
View
Most Expensive
MOH London
LG375961157 · Oct 29
$2,434 NZD
£1,080 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $486 NZDSave up to $1,455 NZD

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
$486 NZD