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Radiant|Lab Grown|IGI

1.59ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG569320440

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

Certificate IGI LG569320440

Diamond specifications and retailer prices

From $1,035 USD
As of November 5, 2026
Save $605 USD (37%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,640 USD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.59ct lab-grown radiant diamond

This 1.59ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG569320440 or 569320440. Listed at 2 retailers as of November 5, 2026, with prices from $1,035 to $1,640, a $605 spread on the same certified stone. Brilliant Earth lists it at $1,640. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.59
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.4°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG569320440
Dimensions8.36 × 5.64 × 3.85 mm
L/W Ratio1.48
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.36 mm5.64 mm1.59 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG569320440
Side View
Table 65.0%Crown 42.4°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 68.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $1,640 USD|Low: $433 USD|High: $1,640 USD|Avg: $868 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
March 23, 2026
Retailer 3$433 USD
Retailer 5$594 USD
Retailer 2$636 USD
Retailer 4$881 USD
Brilliant Earth$1,640 USD

28 data points across 5 retailers

2 retailers$1,035 USD to $1,640 USD

B
Cheapest Retailer
-
$1,035 USD
Most Expensive
B
Brilliant Earth
6877097Y · Nov 6
$1,640 USD
View
1 more retailer has this diamond
Prices start from $1,035 USDSave up to $605 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
1.59ct Radiant
$1,035 USD