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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 $177 AUD
$124 USD
As of October 30, 2026
Save $1,659 AUD (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,835 AUD 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 $177 to $1,835, a $1,659 spread on the same certified stone. MOH London lists it at $1,835. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,835 AUD|Low: $169 AUD|High: $1,853 AUD|Avg: $505 AUD|-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$177 AUD
Retailer 4$198 AUD
Retailer 12$205 AUD
Retailer 9$233 AUD
Retailer 13$233 AUD
Retailer 2$399 AUD
Retailer 10$420 AUD
Retailer 5$437 AUD
Retailer 6$530 AUD
Retailer 3$544 AUD
Retailer 11$705 AUD
Retailer 7$745 AUD
MOH London$1,835 AUD

18 data points across 13 retailers

13 retailers$177 AUD to $1,835 AUD

A
Cheapest Retailer
-
$177 AUD
$124 USD
B+
Retailer 2
-
$198 AUD
$139 USD
View
Final sale: no returns
B+
Retailer 3
-
$205 AUD
$144 USD
View
B+
Retailer 4
-
$233 AUD
$164 USD
View
B+
Retailer 5
-
$233 AUD
$164 USD
View
B+
Retailer 6
-
$399 AUD
$280 USD
View
B+
Retailer 7
-
$420 AUD
$295 USD
View
B+
Retailer 8
-
$437 AUD
HK$2,400 HKD
View
B
Retailer 9
-
$530 AUD
£293 GBP
View
B
Retailer 10
-
$544 AUD
$382 USD
View
B
Retailer 11
-
$705 AUD
$495 USD
View
B
Retailer 12
-
$745 AUD
$523 USD
View
Most Expensive
C
MOH London
LG539229152 · Oct 26
$1,835 AUD
£1,015 GBP
View
12 more retailers have this diamond
Prices start from $177 AUDSave up to $1,659 AUD

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
$177 AUD