Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG818669625

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

Certificate IGI LG818669625

Diamond specifications and retailer prices

From €392 EUR
$438 USD
As of October 30, 2026
Save €2,589 EUR (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €3,061 EUR at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818669625 or 818669625. Listed at 22 retailers as of October 30, 2026, with a 660% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818669625
Dimensions7.78 × 5.75 × 3.93 mm
L/W Ratio1.35
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
7.78 mm5.75 mm1.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818669625
Side View
Table 61.0%Crown 42.8°Girdle: MediumPavilion 36.8°Culet: NoneDepth 68.3%

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: €3,061 EUR|Low: €392 EUR|High: €3,419 EUR|Avg: €1,159 EUR|-0.3%
Rare Carat
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 10
Retailer 11
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Retailer 21
November 1, 2026
Retailer 12€392 EUR
Retailer 17€439 EUR
Retailer 4€439 EUR
Retailer 3€486 EUR
Retailer 11€486 EUR
Retailer 2€501 EUR
Retailer 21€734 EUR
Retailer 16€763 EUR
Retailer 5€765 EUR
Retailer 13€804 EUR
Retailer 20€836 EUR
Retailer 7€952 EUR
Retailer 6€1,173 EUR
Retailer 8€1,419 EUR
Retailer 10€1,564 EUR
Retailer 9€1,594 EUR
Retailer 15€1,692 EUR
Retailer 14€1,757 EUR
Retailer 19€1,797 EUR
Retailer 18€2,981 EUR
Rare Carat€3,061 EUR

23 data points across 21 retailers

22 retailers€392 EUR to €2,981 EUR

A
Cheapest Retailer
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€392 EUR
$438 USD
A
Retailer 2
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€439 EUR
$490 USD
View
Final sale: no returns
A
Retailer 3
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€439 EUR
$491 USD
View
A
Retailer 4
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€486 EUR
$543 USD
View
A
Retailer 5
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€486 EUR
$543 USD
View
A
Retailer 6
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€501 EUR
£441 GBP
View
A
Retailer 7
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€734 EUR
$820 USD
View
A
Retailer 8
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€763 EUR
View
A
Retailer 9
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€765 EUR
$855 USD
View
A
Retailer 10
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€804 EUR
£707 GBP
View
A
Retailer 11
-
€836 EUR
ZAR 15,088 ZAR
View
A
Retailer 12
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€952 EUR
$1,064 USD
View
B+
Retailer 13
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€1,173 EUR
$1,311 USD
View
B+
Retailer 14
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€1,419 EUR
£1,248 GBP
View
B+
Retailer 15
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€1,564 EUR
$1,747 USD
View
B+
Retailer 16
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€1,594 EUR
$1,781 USD
View
B+
Retailer 17
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€1,692 EUR
$1,890 USD
View
B+
Retailer 18
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€1,702 EUR
SGD 2,570 SGD
View
B
Retailer 19
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€1,757 EUR
$1,963 USD
View
B+
Retailer 20
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€1,797 EUR
£1,581 GBP
View
B
Retailer 21
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€2,981 EUR
$3,330 USD
View
Most Expensive
Rare Carat
VR-225541 · Oct 18
€3,061 EUR
$3,420 USD
View
Price last confirmed 13 days ago
21 more retailers have this diamond
Prices start from €392 EURSave up to €2,589 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
1.51ct Radiant
€392 EUR