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Radiant|Lab Grown|IGI

1.56ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG830625504

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

Certificate IGI LG830625504

Diamond specifications and retailer prices

From $534 USD
As of October 30, 2026
Save $4,206 USD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,740 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830625504 or 830625504. Listed at 17 retailers as of October 30, 2026, with prices from $534 to $4,740, a $4,206 spread on the same certified stone. Do Amore Diamonds lists it at $4,740. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.56
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830625504
Dimensions8.18 × 5.61 × 3.94 mm
L/W Ratio1.46
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
8.18 mm5.61 mm1.56 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830625504
Side View
Table 63.0%Crown 42.5°Girdle: Slightly ThickPavilion 36.7°Culet: NoneDepth 70.2%

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: $4,740 USD|Low: $534 USD|High: $5,150 USD|Avg: $2,099 USD
Do Amore Diamonds
Retailer 2
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Retailer 18
October 31, 2026
Retailer 16$534 USD
Retailer 8$598 USD
Retailer 3$793 USD
Retailer 15$795 USD
Retailer 5$914 USD
Retailer 18$1,024 USD
Retailer 13$1,131 USD
Retailer 2$1,173 USD
Retailer 4$1,709 USD
Retailer 7$1,878 USD
Retailer 6$1,923 USD
Retailer 9$2,303 USD
Retailer 17$2,961 USD
Retailer 12$3,192 USD
Retailer 11$3,360 USD
Retailer 10$3,379 USD
Retailer 14$3,705 USD
Do Amore Diamonds$4,740 USD

35 data points across 18 retailers

17 retailers$534 USD to $4,740 USD

A
Cheapest Retailer
-
$534 USD
A
Retailer 2
-
$598 USD
View
A
Retailer 3
-
$793 USD
View
A
Retailer 4
-
$795 USD
View
A
Retailer 5
-
$914 USD
View
A
Retailer 6
-
$1,018 USD
View
A
Retailer 7
-
$1,024 USD
View
B+
Retailer 8
-
$1,173 USD
€1,117 EUR
View
B+
Retailer 9
-
$1,709 USD
View
B
Retailer 10
-
$1,878 USD
View
B+
Retailer 11
-
$1,923 USD
View
Retailer 12
-
$2,303 USD
View
Price last confirmed 15 days ago
B
Retailer 13
-
$2,961 USD
View
B
Retailer 14
-
$3,192 USD
£2,513 GBP
View
B
Retailer 15
-
$3,360 USD
View
B
Retailer 16
-
$3,705 USD
View
Most Expensive
B
Do Amore Diamonds
27-1851107BD · Oct 31
$4,740 USD
View
16 more retailers have this diamond
Prices start from $534 USDSave up to $4,206 USD

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
$534 USD