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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG771614878

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

Certificate IGI LG771614878

Diamond specifications and retailer prices

From €260 EUR
$290 USD
As of October 30, 2026
Save €1,996 EUR (88%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: €2,256 EUR at Brilliant Earth · As of October 31, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG771614878 or 771614878. Listed at 26 retailers as of October 30, 2026, with prices from €260 to €2,256, a €1,996 spread on the same certified stone. Brilliant Earth lists it at €2,256. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771614878
Dimensions8.08 × 5.57 × 3.86 mm
L/W Ratio1.45
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
8.08 mm5.57 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771614878
Side View
Table 65.0%Crown 42.8°Girdle: Slightly ThickPavilion 34°Culet: NoneDepth 69.3%

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: €2,256 EUR|Low: €260 EUR|High: €3,115 EUR|Avg: €947 EUR|-27.6%
Brilliant Earth
Retailer 2
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Retailer 25
November 1, 2026
Retailer 7€260 EUR
Retailer 8€289 EUR
Retailer 25€301 EUR
Retailer 14€321 EUR
Retailer 24€321 EUR
Retailer 2€331 EUR
Retailer 17€355 EUR
Retailer 23€461 EUR
Retailer 13€524 EUR
Retailer 12€529 EUR
Retailer 22€553 EUR
Retailer 6€554 EUR
Retailer 19€569 EUR
Retailer 21€748 EUR
Retailer 3€906 EUR
Retailer 5€988 EUR
Retailer 18€1,031 EUR
Retailer 4€1,034 EUR
Retailer 11€1,078 EUR
Retailer 16€1,237 EUR
Retailer 10€1,255 EUR
Retailer 20€1,296 EUR
Retailer 15€1,325 EUR
Retailer 9€2,036 EUR
Brilliant Earth€2,256 EUR

33 data points across 25 retailers

26 retailers€260 EUR to €2,256 EUR

A
Cheapest Retailer
-
€260 EUR
$290 USD
A
Retailer 2
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€289 EUR
$323 USD
View
Final sale: no returns
A
Retailer 3
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€301 EUR
$336 USD
View
A
Retailer 4
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€321 EUR
$359 USD
View
A
Retailer 5
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€321 EUR
$359 USD
View
A
Retailer 6
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€331 EUR
£291 GBP
View
A
Retailer 7
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€355 EUR
HK$3,100 HKD
View
A
Retailer 8
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€461 EUR
$515 USD
View
A
Retailer 9
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€524 EUR
View
A
Retailer 10
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€529 EUR
$591 USD
View
A
Retailer 11
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€553 EUR
ZAR 9,975 ZAR
View
A
Retailer 12
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€554 EUR
$619 USD
View
A
Retailer 13
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€569 EUR
£500 GBP
View
A
Retailer 14
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€748 EUR
A$1,285 AUD
View
B+
Retailer 15
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€906 EUR
$1,012 USD
View
B+
Retailer 16
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€988 EUR
$1,104 USD
View
B+
Retailer 17
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€1,031 EUR
SGD 1,556 SGD
View
B+
Retailer 18
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€1,034 EUR
$1,155 USD
View
B+
Retailer 19
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€1,078 EUR
$1,204 USD
View
B+
Retailer 20
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€1,153 EUR
$1,288 USD
View
B+
Retailer 21
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€1,237 EUR
$1,382 USD
View
B+
Retailer 22
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€1,255 EUR
£1,104 GBP
View
B+
Retailer 23
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€1,296 EUR
£1,140 GBP
View
B+
Retailer 24
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€1,325 EUR
$1,480 USD
View
Retailer 25
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€2,036 EUR
$2,275 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
19064245A · Oct 31
€2,256 EUR
$2,520 USD
View
25 more retailers have this diamond
Prices start from €260 EURSave up to €1,996 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
€260 EUR