Radiant|Lab Grown|IGI

1.56ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG787623429

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

Certificate IGI LG787623429

Diamond specifications and retailer prices

From $832 USD
HK$6,500 HKD
As of October 31, 2026
Save $2,778 USD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,610 USD at Brilliant Earth · As of October 31, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG787623429 or 787623429. Listed at 13 retailers as of October 31, 2026, with prices from $832 to $3,610, a $2,778 spread on the same certified stone. Brilliant Earth lists it at $3,610. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787623429
Dimensions8.53 × 5.73 × 3.74 mm
L/W Ratio1.49
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
8.53 mm5.73 mm1.56 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787623429
Side View
Table 62.0%Crown 41.8°Girdle: Slightly ThickPavilion 33.2°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
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 31
Current: $3,610 USD|Low: $832 USD|High: $5,150 USD|Avg: $2,073 USD|-29.9%
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
November 1, 2026
Retailer 9$832 USD
Retailer 11$940 USD
Retailer 3$1,025 USD
Retailer 7$1,111 USD
Retailer 6$1,135 USD
Retailer 13$1,167 USD
Retailer 8$1,248 USD
Retailer 12$1,716 USD
Retailer 10$2,318 USD
Retailer 5$2,351 USD
Retailer 2$3,153 USD
Retailer 4$3,379 USD
Brilliant Earth$3,610 USD

44 data points across 13 retailers

13 retailers$832 USD to $3,610 USD

A
Cheapest Retailer
-
$832 USD
HK$6,500 HKD
A
Retailer 2
-
$940 USD
View
A
Retailer 3
-
$1,025 USD
View
B+
Retailer 4
-
$1,111 USD
€1,058 EUR
View
B+
Retailer 5
-
$1,135 USD
£894 GBP
View
B+
Retailer 6
-
$1,167 USD
View
B+
Retailer 7
-
$1,248 USD
ZAR 20,167 ZAR
View
B+
Retailer 8
-
$1,716 USD
View
B+
Retailer 9
-
$2,318 USD
View
B
Retailer 10
-
$2,351 USD
View
B
Retailer 11
-
$3,153 USD
£2,483 GBP
View
B
Retailer 12
-
$3,379 USD
View
Most Expensive
B
Brilliant Earth
19961722A · Oct 31
$3,610 USD
View
12 more retailers have this diamond
Prices start from $832 USDSave up to $2,778 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
$832 USD