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Radiant|Lab Grown|IGI

1.55ct F IF Radiant Lab Grown Diamond

F/IF • IGI LG681577503

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

Certificate IGI LG681577503

Diamond specifications and retailer prices

From $1,350 USD
As of November 4, 2026
Save $1,610 USD (54%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,960 USD at Kay Jewelers · As of November 4, 2026
View at Kay Jewelers

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) and certified by IGI LG681577503 or 681577503. Listed at 2 retailers as of November 4, 2026, with prices from $1,350 to $2,960, a $1,610 spread on the same certified stone. Kay Jewelers lists it at $2,960. 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

1.55
Carat
F
Color
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.7°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG681577503
Dimensions8.24 × 5.76 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm5.76 mm1.55 ctF / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG681577503
Side View
Table 66.0%Crown 47.7°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 67.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $2,960 USD|Low: $1,350 USD|High: $4,200 USD|Avg: $2,811 USD|-29.5%
Kay Jewelers
Retailer 2
September 28, 2026
Retailer 2$1,350 USD
Kay Jewelers$2,960 USD

5 data points across 2 retailers

2 retailers$1,350 USD to $2,960 USD

B
Cheapest Retailer
-
$1,350 USD
Most Expensive
C
Kay Jewelers
254087525 · Nov 4
$2,960 USD
View
1 more retailer has this diamond
Prices start from $1,350 USDSave up to $1,610 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.

B
1.55ct Radiant
$1,350 USD