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 €243 EUR
$271 USD
As of October 30, 2026
Save €2,013 EUR (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €2,533 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 October 30, 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
Color
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: Oct 30
Current: €2,256 EUR|Low: €243 EUR|High: €2,533 EUR|Avg: €955 EUR|-11.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 12€243 EUR
Retailer 11€281 EUR
Retailer 18€301 EUR
Retailer 2€341 EUR
Retailer 19€443 EUR
Retailer 8€499 EUR
Retailer 15€532 EUR
Retailer 9€570 EUR
Retailer 13€588 EUR
Retailer 3€603 EUR
Retailer 5€740 EUR
Retailer 6€771 EUR
Retailer 17€923 EUR
Retailer 4€1,066 EUR
Retailer 16€1,136 EUR
Retailer 7€1,213 EUR
Retailer 10€1,244 EUR
Retailer 21€1,337 EUR
Retailer 14€1,793 EUR
Retailer 20€2,148 EUR
Brilliant Earth€2,256 EUR

7 data points across 21 retailers

21 retailers€243 EUR to €2,256 EUR

A
Cheapest Retailer
-
€243 EUR
$271 USD
A
Retailer 2
-
€281 EUR
$314 USD
View
A
Retailer 3
-
€301 EUR
$336 USD
View
A
Retailer 4
-
€341 EUR
£300 GBP
View
A
Retailer 5
-
€443 EUR
$495 USD
View
A
Retailer 6
-
€499 EUR
$557 USD
View
A
Retailer 7
-
€532 EUR
View
A
Retailer 8
-
€570 EUR
ZAR 10,286 ZAR
View
A
Retailer 9
-
€588 EUR
£518 GBP
View
A
Retailer 10
-
€603 EUR
$674 USD
View
A
Retailer 11
-
€740 EUR
$827 USD
View
B+
Retailer 12
-
€771 EUR
A$1,326 AUD
View
B+
Retailer 13
-
€923 EUR
$1,031 USD
View
B+
Retailer 14
-
€1,066 EUR
$1,191 USD
View
B+
Retailer 15
-
€1,136 EUR
$1,269 USD
View
B+
Retailer 16
-
€1,213 EUR
$1,356 USD
View
B+
Retailer 17
-
€1,244 EUR
SGD 1,878 SGD
View
B
Retailer 18
-
€1,337 EUR
£1,176 GBP
View
B
Retailer 19
-
€2,148 EUR
$2,400 USD
View
B
Retailer 20
-
€2,256 EUR
$2,520 USD
View
Most Expensive
Brilliant Earth
13715575B · Oct 21
€2,533 EUR
$2,830 USD
View
Price last confirmed 11 days ago
20 more retailers have this diamond
Prices start from €243 EURSave up to €2,013 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
€243 EUR