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Radiant|Lab Grown|IGI

0.51ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG789630177

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

Certificate IGI LG789630177

Diamond specifications and retailer prices

From $191 AUD
$134 USD
As of October 27, 2026
Save $1,796 AUD (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,202 AUD at Diamond Quarter · As of October 28, 2026
View at Diamond Quarter

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG789630177 or 789630177. Listed at 22 retailers as of October 27, 2026, with a 942% 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
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789630177
Dimensions5.73 × 3.70 × 2.69 mm
L/W Ratio1.55
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.73 mm3.70 mm0.51 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789630177
Side View
Table 62.0%Crown 45.2°Girdle: ThickPavilion 34.5°Culet: NoneDepth 72.7%

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 27
Current: $400 AUD|Low: $179 AUD|High: $2,034 AUD|Avg: $603 AUD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
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Retailer 19
Retailer 20
October 30, 2026
Retailer 2$191 AUD
Retailer 18$222 AUD
Retailer 8$232 AUD
Retailer 12$236 AUD
Retailer 5$259 AUD
Retailer 17$334 AUD
Retailer 1$400 AUD
Retailer 9$415 AUD
Retailer 20$428 AUD
Retailer 3$463 AUD
Retailer 19$468 AUD
Retailer 10$477 AUD
Retailer 7$591 AUD
Retailer 4$665 AUD
Retailer 13$712 AUD
Retailer 15$762 AUD
Retailer 11$789 AUD
Retailer 6$841 AUD
Retailer 16$1,400 AUD
Retailer 14$1,987 AUD

32 data points across 20 retailers

22 retailers$191 AUD to $1,987 AUD

A
Cheapest Retailer
-
$191 AUD
$134 USD
A
Retailer 2
-
$222 AUD
$156 USD
View
A
Retailer 3
-
$232 AUD
$163 USD
View
A
Retailer 4
-
$236 AUD
$166 USD
View
A
Retailer 5
-
$259 AUD
$182 USD
View
Final sale: no returns
A
Retailer 6
-
$334 AUD
$235 USD
View
A
Retailer 7
-
$400 AUD
£221 GBP
View
A
Retailer 8
-
$415 AUD
€278 EUR
View
A
Retailer 9
-
$428 AUD
ZAR 4,855 ZAR
View
B+
Retailer 10
-
$463 AUD
$325 USD
View
B+
Retailer 11
-
$468 AUD
$329 USD
View
Retailer 12
-
$477 AUD
$335 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
$591 AUD
View
B+
Retailer 14
-
$665 AUD
$467 USD
View
B
Retailer 15
-
$712 AUD
$500 USD
View
B
Retailer 16
-
$762 AUD
$535 USD
View
B
Retailer 17
-
$789 AUD
$554 USD
View
B
Retailer 18
-
$811 AUD
$570 USD
View
B
Retailer 19
-
$841 AUD
$591 USD
View
B
Retailer 20
-
$1,400 AUD
$983 USD
View
B
Retailer 21
-
$1,987 AUD
£1,099 GBP
View
Most Expensive
Diamond Quarter
0.51IFELG09B0A5N · Oct 28
$3,202 AUD
£1,771 GBP
View
Price under review
21 more retailers have this diamond
Prices start from $191 AUDSave up to $1,796 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
$191 AUD