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Radiant|Lab Grown|IGI

1.56ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG638454903

Certificate IGI LG638454903

Diamond specifications and retailer prices

From $330 USD
Save $3,980 USD (92%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $4,310 USD at Brilliant Earth
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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG638454903 or 638454903. Listed at 27 retailers, with prices from $330 to $4,310 at Brilliant Earth, a $3,980 spread on the same certified stone. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG638454903
Dimensions8.15 × 5.87 × 3.83 mm
L/W Ratio1.39
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
8.15 mm5.87 mm1.56 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG638454903
Side View
Table 65.0%Crown 37.4°Girdle: MediumPavilion 34.3°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 30
Current: $4,310 USD|Low: $263 USD|High: $4,650 USD|Avg: $1,351 USD|-7.3%
Brilliant Earth
Retailer 2
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Retailer 21
October 1, 2026
Retailer 2$394 USD
Retailer 15$472 USD
Retailer 16$474 USD
Retailer 17$515 USD
Retailer 5$650 USD
Retailer 7$668 USD
Retailer 4$689 USD
Retailer 18$724 USD
Retailer 11$927 USD
Retailer 3$950 USD
Retailer 9$1,079 USD
Retailer 19$1,101 USD
Retailer 14$1,360 USD
Retailer 6$1,372 USD
Retailer 12$1,609 USD
Retailer 20$1,660 USD
Retailer 8$1,692 USD
Retailer 13$1,695 USD
Retailer 10$1,788 USD
Retailer 21$2,610 USD
Brilliant Earth$4,310 USD

40 data points across 21 retailers

27 retailers$330 USD to $4,310 USD

A
Cheapest Retailer
-
$330 USD
A
Retailer 2
-
$383 USD
View
A
Retailer 3
-
$394 USD
View
A
Retailer 4
-
$404 USD
View
A
Retailer 5
-
$472 USD
View
A
Retailer 6
-
$474 USD
HK$3,700 HKD
View
A
Retailer 7
-
$515 USD
View
A
Retailer 8
-
$650 USD
€619 EUR
View
A
Retailer 9
-
$668 USD
View
A
Retailer 10
-
$689 USD
ZAR 11,130 ZAR
View
A
Retailer 11
-
$710 USD
£559 GBP
View
Price last confirmed 21 days ago
A
Retailer 12
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$725 USD
£571 GBP
View
A
Retailer 13
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$927 USD
View
A
Retailer 14
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$950 USD
A$1,462 AUD
View
A
Retailer 15
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$1,079 USD
View
A
Retailer 16
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$1,101 USD
View
B+
Retailer 17
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$1,316 USD
View
B+
Retailer 18
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$1,360 USD
View
B+
Retailer 19
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$1,372 USD
SGD 1,854 SGD
View
B+
Retailer 20
-
$1,609 USD
View
B+
Retailer 21
-
$1,660 USD
£1,307 GBP
View
B+
Retailer 22
-
$1,692 USD
View
B+
Retailer 23
-
$1,695 USD
A$2,607 AUD
View
B+
Retailer 24
-
$1,825 USD
View
B
Retailer 25
-
$2,504 USD
View
B
Retailer 26
-
$2,610 USD
View
Most Expensive
B
Brilliant Earth
10876631A · Sep 29
$4,310 USD
View
26 more retailers have this diamond
Prices start from $330 USDSave up to $3,980 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.

A
1.56ct Radiant
$330 USD