Radiant|Lab Grown|IGI

1.51ct E FL Radiant Lab Grown Diamond

EX • E/FL • IGI LG815698215

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

Certificate IGI LG815698215

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)
25 retailers carry this diamond
Most expensive: €3,536 EUR at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

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 LG815698215 or 815698215. Listed at 25 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle24.4°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815698215
Dimensions8.03 × 5.95 × 3.68 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
8.03 mm5.95 mm1.51 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815698215
Side View
Table 68.0%Crown 24.4°Girdle: MediumPavilion 34.1°Culet: NoneDepth 61.8%

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: €2,981 EUR|Low: €392 EUR|High: €3,428 EUR|Avg: €1,323 EUR|-13.1%
Brilliant Earth
Retailer 2
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Retailer 23
November 1, 2026
Retailer 11€392 EUR
Retailer 17€439 EUR
Retailer 23€439 EUR
Retailer 10€486 EUR
Retailer 22€486 EUR
Retailer 21€613 EUR
Retailer 3€700 EUR
Retailer 13€763 EUR
Retailer 4€765 EUR
Retailer 2€804 EUR
Retailer 20€836 EUR
Retailer 6€952 EUR
Retailer 5€1,173 EUR
Retailer 7€1,419 EUR
Retailer 9€1,564 EUR
Retailer 8€1,594 EUR
Retailer 16€1,702 EUR
Retailer 14€1,757 EUR
Retailer 19€1,797 EUR
Retailer 18€1,871 EUR
Retailer 15€2,529 EUR
Brilliant Earth€2,981 EUR
Retailer 12€3,061 EUR

26 data points across 23 retailers

25 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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€613 EUR
$685 USD
View
A
Retailer 7
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€700 EUR
$782 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
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€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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€1,871 EUR
$2,090 USD
View
B
Retailer 22
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€2,529 EUR
$2,825 USD
View
B
Retailer 23
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€2,981 EUR
$3,330 USD
View
Retailer 24
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€3,061 EUR
$3,420 USD
View
Price last confirmed 13 days ago
Most Expensive
Brilliant Earth
20988172A · Sep 28
€3,536 EUR
$3,950 USD
View
Price last confirmed 33 days ago
24 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