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 $134 USD
As of October 27, 2026
Save $1,262 USD (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,249 USD 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
Color
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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,396 USD|Low: $126 USD|High: $1,429 USD|Avg: $414 USD|-2.3%
Retailer 1
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Retailer 20
October 29, 2026
Retailer 20$134 USD
Retailer 17$156 USD
Retailer 7$163 USD
Retailer 8$163 USD
Retailer 4$182 USD
Retailer 16$235 USD
Retailer 15$280 USD
Retailer 9$292 USD
Retailer 19$301 USD
Retailer 2$325 USD
Retailer 18$329 USD
Retailer 10$335 USD
Retailer 6$415 USD
Retailer 3$467 USD
Retailer 13$500 USD
Retailer 12$535 USD
Retailer 11$554 USD
Retailer 5$591 USD
Retailer 14$983 USD
Retailer 1$1,396 USD

31 data points across 20 retailers

22 retailers$134 USD to $1,396 USD

A
Cheapest Retailer
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$134 USD
A
Retailer 2
-
$156 USD
View
A
Retailer 3
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$163 USD
View
A
Retailer 4
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$163 USD
View
A
Retailer 5
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$182 USD
View
Final sale: no returns
A
Retailer 6
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$235 USD
View
A
Retailer 7
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$280 USD
£221 GBP
View
A
Retailer 8
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$292 USD
€278 EUR
View
A
Retailer 9
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$301 USD
ZAR 4,855 ZAR
View
B+
Retailer 10
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$325 USD
View
B+
Retailer 11
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$329 USD
View
A
Retailer 12
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$335 USD
View
Price last confirmed 10 days ago
B+
Retailer 13
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$415 USD
A$639 AUD
View
B+
Retailer 14
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$467 USD
View
B
Retailer 15
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$500 USD
View
B
Retailer 16
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$535 USD
View
B
Retailer 17
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$554 USD
View
B
Retailer 18
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$570 USD
View
B
Retailer 19
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$591 USD
View
B
Retailer 20
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$983 USD
View
B
Retailer 21
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$1,396 USD
£1,099 GBP
View
Most Expensive
B
Diamond Quarter
0.51IFELG09B0A5N · Oct 28
$2,249 USD
£1,771 GBP
View
Price under review
21 more retailers have this diamond
Prices start from $134 USDSave up to $1,262 USD

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
$134 USD