Radiant|Lab Grown|IGI

1.55ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG613346986

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

Certificate IGI LG613346986

Diamond specifications and retailer prices

From $256 USD
As of November 4, 2026
Save $2,244 USD (90%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $2,500 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct 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 LG613346986 or 613346986. Listed at 28 retailers as of November 4, 2026, with prices from $256 to $2,500, a $2,244 spread on the same certified stone. Brilliant Earth lists it at $2,500. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle27.9°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613346986
Dimensions7.99 × 5.78 × 3.89 mm
L/W Ratio1.38
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
7.99 mm5.78 mm1.55 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613346986
Side View
Table 64.0%Crown 27.9°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $2,500 USD|Low: $256 USD|High: $2,500 USD|Avg: $866 USD
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
November 5, 2026
Retailer 17$256 USD
Retailer 9$303 USD
Retailer 5$473 USD
Retailer 11$475 USD
Retailer 3$495 USD
Retailer 14$577 USD
Retailer 6$582 USD
Retailer 13$604 USD
Retailer 2$612 USD
Retailer 8$815 USD
Retailer 12$821 USD
Retailer 16$975 USD
Retailer 4$1,248 USD
Retailer 15$1,279 USD
Retailer 7$1,383 USD
Retailer 10$1,400 USD
Brilliant Earth$2,500 USD

45 data points across 17 retailers

28 retailers$256 USD to $2,500 USD

A
Cheapest Retailer
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$256 USD
Retailer 2
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$256 USD
View
Price last confirmed 28 days ago
Retailer 3
-
$256 USD
View
Price last confirmed 36 days ago
Retailer 4
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$297 USD
View
Price last confirmed 39 days ago
A
Retailer 5
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$303 USD
View
Final sale: no returns
Retailer 6
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$313 USD
View
Price last confirmed 37 days ago
Retailer 7
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$317 USD
View
Price last confirmed 33 days ago
A
Retailer 8
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$473 USD
View
A
Retailer 9
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$475 USD
View
A
Retailer 10
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$495 USD
View
A
Retailer 11
-
$577 USD
View
A
Retailer 12
-
$582 USD
View
A
Retailer 13
-
$604 USD
View
A
Retailer 14
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$612 USD
View
A
Retailer 15
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$784 USD
View
A
Retailer 16
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$815 USD
View
A
Retailer 17
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$821 USD
View
B+
Retailer 18
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$975 USD
View
Retailer 19
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$1,126 USD
View
Price last confirmed 26 days ago
B+
Retailer 20
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$1,126 USD
View
Retailer 21
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$1,126 USD
View
Price last confirmed 36 days ago
B+
Retailer 22
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$1,248 USD
View
B+
Retailer 23
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$1,279 USD
View
B+
Retailer 24
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$1,292 USD
View
B+
Retailer 25
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$1,383 USD
View
B+
Retailer 26
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$1,400 USD
View
B
Retailer 27
-
$2,270 USD
View
Most Expensive
B
Brilliant Earth
8924177Y · Nov 4
$2,500 USD
View
27 more retailers have this diamond
Prices start from $256 USDSave up to $2,244 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
1.55ct Radiant
$256 USD