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 €120 EUR
$134 USD
As of October 30, 2026
Save €1,129 EUR (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €2,013 EUR 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 29, 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

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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 30
Current: €252 EUR|Low: €113 EUR|High: €1,279 EUR|Avg: €380 EUR|+1.1%
Retailer 1
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Retailer 20
October 31, 2026
Retailer 4€120 EUR
Retailer 20€140 EUR
Retailer 10€146 EUR
Retailer 15€149 EUR
Retailer 7€163 EUR
Retailer 19€210 EUR
Retailer 1€252 EUR
Retailer 11€261 EUR
Retailer 3€269 EUR
Retailer 5€291 EUR
Retailer 2€294 EUR
Retailer 13€300 EUR
Retailer 9€372 EUR
Retailer 14€403 EUR
Retailer 6€418 EUR
Retailer 17€479 EUR
Retailer 12€506 EUR
Retailer 8€529 EUR
Retailer 18€880 EUR
Retailer 16€1,249 EUR

32 data points across 20 retailers

22 retailers€120 EUR to €1,249 EUR

A
Cheapest Retailer
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€120 EUR
$134 USD
A
Retailer 2
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€140 EUR
$156 USD
View
A
Retailer 3
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€146 EUR
$163 USD
View
A
Retailer 4
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€149 EUR
$166 USD
View
A
Retailer 5
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€163 EUR
$182 USD
View
Final sale: no returns
A
Retailer 6
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€210 EUR
$235 USD
View
A
Retailer 7
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€252 EUR
£222 GBP
View
Retailer 8
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€261 EUR
View
Price last confirmed 8 days ago
A
Retailer 9
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€269 EUR
ZAR 4,855 ZAR
View
B+
Retailer 10
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€291 EUR
$325 USD
View
B+
Retailer 11
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€294 EUR
$329 USD
View
Retailer 12
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€300 EUR
$335 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
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€372 EUR
A$639 AUD
View
B+
Retailer 14
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€403 EUR
$450 USD
View
B+
Retailer 15
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€418 EUR
$467 USD
View
B
Retailer 16
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€448 EUR
$500 USD
View
B
Retailer 17
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€479 EUR
$535 USD
View
B
Retailer 18
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€506 EUR
$565 USD
View
B
Retailer 19
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€529 EUR
$591 USD
View
B
Retailer 20
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€880 EUR
$983 USD
View
B
Retailer 21
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€1,249 EUR
£1,099 GBP
View
Most Expensive
Diamond Quarter
0.51IFELG09B0A5N · Oct 28
€2,013 EUR
£1,771 GBP
View
Price under review
21 more retailers have this diamond
Prices start from €120 EURSave up to €1,129 EUR

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
€120 EUR