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Radiant|Lab Grown|IGI

1.56ct D IF Radiant Lab Grown Diamond

VG • D/IF • IGI LG677566544

Certificate IGI LG677566544

Diamond specifications and retailer prices

From $407 USD
Save $1,769 USD (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,176 USD at With Clarity
View at With Clarity

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 very-good cut grade and certified by IGI LG677566544 or 677566544. Listed at 23 retailers, with prices from $407 to $2,176 at With Clarity, a $1,769 spread on the same certified stone. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.56
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677566544
Dimensions5.82 × 5.82 × 7.63 mm
L/W Ratio1.00
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
5.82 mm5.82 mm1.56 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677566544
Side View
Table 64.0%Crown 39.7°Girdle: MED-STKPavilion 37.1°Culet: NoneDepth 71.0%

Caratlytics Score

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

Price History

Last verified: Sep 30
Current: $823 USD|Low: $316 USD|High: $2,580 USD|Avg: $1,241 USD|+4.7%
Retailer 1
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
With Clarity
October 1, 2026
Retailer 7$455 USD
Retailer 18$505 USD
Retailer 9$520 USD
Retailer 15$600 USD
Retailer 14$678 USD
Retailer 2$749 USD
Retailer 3$756 USD
Retailer 1$823 USD
Retailer 19$850 USD
Retailer 4$1,106 USD
Retailer 13$1,112 USD
Retailer 17$1,172 USD
Retailer 10$1,326 USD
Retailer 8$1,658 USD
Retailer 12$1,737 USD
Retailer 5$1,855 USD
Retailer 16$1,996 USD
Retailer 6$2,067 USD
With Clarity$2,132 USD
Retailer 11$2,580 USD

21 data points across 20 retailers

23 retailers$407 USD to $2,176 USD

A
Cheapest Retailer
-
$407 USD
A
Retailer 2
-
$455 USD
View
A
Retailer 3
-
$456 USD
View
A
Retailer 4
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$498 USD
View
A
Retailer 5
-
$505 USD
View
A
Retailer 6
-
$520 USD
£409 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
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$600 USD
View
A
Retailer 8
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$678 USD
View
A
Retailer 9
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$749 USD
View
A
Retailer 10
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$756 USD
€720 EUR
View
A
Retailer 11
-
$823 USD
£648 GBP
View
A
Retailer 12
-
$850 USD
ZAR 13,725 ZAR
View
B+
Retailer 13
-
$1,047 USD
View
A
Retailer 14
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$1,106 USD
View
B+
Retailer 15
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$1,112 USD
View
B+
Retailer 16
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$1,172 USD
A$1,803 AUD
View
B+
Retailer 17
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$1,658 USD
View
B+
Retailer 18
-
$1,737 USD
A$2,673 AUD
View
B
Retailer 19
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$1,855 USD
View
B
Retailer 20
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$1,922 USD
View
B
Retailer 21
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$1,996 USD
£1,572 GBP
View
B
Retailer 22
-
$2,067 USD
View
Most Expensive
B
With Clarity
677566544 · Sep 30
$2,176 USD
View
22 more retailers have this diamond
Prices start from $407 USDSave up to $1,769 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
$407 USD