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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 $1,867 NZD
As of November 5, 2026
Save $1,091 NZD (37%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,958 NZD 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 $1,867 to $2,958, a $1,091 spread on the same certified stone. Brilliant Earth lists it at $2,958. 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
Colour
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: $2,958 NZD|Low: $781 NZD|High: $2,958 NZD|Avg: $1,566 NZD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
March 23, 2026
Retailer 3$781 NZD
Retailer 5$1,072 NZD
Retailer 2$1,147 NZD
Retailer 4$1,589 NZD
Brilliant Earth$2,958 NZD

28 data points across 5 retailers

2 retailers$1,867 NZD to $2,958 NZD

B
Cheapest Retailer
-
$1,867 NZD
Most Expensive
B
Brilliant Earth
6877097Y · Nov 6
$2,958 NZD
$1,640 USD
View
1 more retailer has this diamond
Prices start from $1,867 NZDSave up to $1,091 NZD

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
$1,867 NZD