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Radiant|Lab Grown|IGI

1.56ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG620429386

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

Certificate IGI LG620429386

Diamond specifications and retailer prices

From €241 EUR
As of November 4, 2026
Save €2,004 EUR (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €2,521 EUR at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.56ct lab-grown radiant diamond

This 1.56ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG620429386 or 620429386. Listed at 21 retailers as of November 4, 2026, with a 830% 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

1.56
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.8°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620429386
Dimensions8.10 × 5.76 × 3.75 mm
L/W Ratio1.41
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
8.10 mm5.76 mm1.56 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620429386
Side View
Table 65.0%Crown 50.8°Girdle: MED-THKPavilion 33°Culet: NoneDepth 65.1%

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: Nov 4
Current: €2,245 EUR|Low: €241 EUR|High: €2,521 EUR|Avg: €928 EUR|-11.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 11
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Retailer 20
Retailer 21
November 5, 2026
Retailer 12€241 EUR
Retailer 11€280 EUR
Retailer 21€299 EUR
Retailer 2€338 EUR
Retailer 3€441 EUR
Retailer 9€496 EUR
Retailer 19€529 EUR
Retailer 18€568 EUR
Retailer 13€580 EUR
Retailer 5€601 EUR
Retailer 7€737 EUR
Retailer 16€774 EUR
Retailer 20€919 EUR
Retailer 6€1,061 EUR
Retailer 17€1,131 EUR
Retailer 8€1,207 EUR
Retailer 10€1,238 EUR
Retailer 15€1,319 EUR
Retailer 14€1,785 EUR
Retailer 4€2,138 EUR
Brilliant Earth€2,245 EUR

11 data points across 21 retailers

21 retailers€241 EUR to €2,245 EUR

A
Cheapest Retailer
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€241 EUR
A
Retailer 2
-
€280 EUR
View
A
Retailer 3
-
€299 EUR
View
A
Retailer 4
-
€338 EUR
View
A
Retailer 5
-
€441 EUR
View
A
Retailer 6
-
€496 EUR
View
A
Retailer 7
-
€529 EUR
View
A
Retailer 8
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€568 EUR
View
A
Retailer 9
-
€580 EUR
View
A
Retailer 10
-
€601 EUR
View
A
Retailer 11
-
€737 EUR
View
B+
Retailer 12
-
€774 EUR
View
B+
Retailer 13
-
€919 EUR
View
B+
Retailer 14
-
€1,061 EUR
View
B+
Retailer 15
-
€1,131 EUR
View
B+
Retailer 16
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€1,207 EUR
View
B+
Retailer 17
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€1,238 EUR
View
B+
Retailer 18
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€1,319 EUR
View
B
Retailer 19
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€2,138 EUR
View
B
Retailer 20
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€2,245 EUR
View
Most Expensive
Brilliant Earth
13715575B · Oct 21
€2,521 EUR
$2,830 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from €241 EURSave up to €2,004 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
1.56ct Radiant
€241 EUR