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Radiant|Lab Grown|IGI

0.51ct F IF Radiant Lab Grown Diamond

VG • F/IF • IGI LG649433094

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

Certificate IGI LG649433094

Diamond specifications and retailer prices

From $425 AUD
As of November 6, 2026
Save $582 AUD (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,007 AUD at Riddles Jewelry · As of November 6, 2026
View at Riddles Jewelry

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG649433094 or 649433094. Listed at 5 retailers as of November 6, 2026, with prices from $425 to $1,007, a $582 spread on the same certified stone. Riddles Jewelry lists it at $1,007. 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
F
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle42.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649433094
Dimensions5.51 × 3.97 × 2.67 mm
L/W Ratio1.39
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.. Type IIa
Top View
5.51 mm3.97 mm0.51 ctF / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG649433094
Side View
Table 65.0%Crown 38.5°Girdle: STK-THKPavilion 42.8°Culet: NoneDepth 67.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $626 AUD|Low: $425 AUD|High: $1,007 AUD|Avg: $695 AUD|-14.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Riddles Jewelry
October 30, 2026
Retailer 2$425 AUD
Retailer 3$515 AUD
Retailer 1$626 AUD
Retailer 4$851 AUD
Riddles Jewelry$1,007 AUD

2 data points across 5 retailers

5 retailers$425 AUD to $1,007 AUD

A
Cheapest Retailer
-
$425 AUD
B+
Retailer 2
-
$515 AUD
View
B+
Retailer 3
-
$626 AUD
View
B
Retailer 4
-
$851 AUD
View
Most Expensive
B
Riddles Jewelry
1966220224 · Nov 6
$1,007 AUD
$692 USD
View
4 more retailers have this diamond
Prices start from $425 AUDSave up to $582 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
$425 AUD