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Radiant|Lab Grown|IGI

1.64ct F IF Radiant Lab Grown Diamond

EX • F/IF • IGI LG729575026

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

Certificate IGI LG729575026

Diamond specifications and retailer prices

From $860 NZD
As of November 2, 2026
Save $3,646 NZD (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,506 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.64ct lab-grown radiant diamond

This 1.64ct 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 LG729575026 or 729575026. Listed at 7 retailers as of November 2, 2026, with prices from $860 to $4,506, a $3,646 spread on the same certified stone. Brilliant Earth lists it at $4,506. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729575026
Dimensions8.30 × 5.84 × 3.91 mm
L/W Ratio1.42
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
8.30 mm5.84 mm1.64 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729575026
Side View
Table 63.0%Crown 42°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $4,506 NZD|Low: $859 NZD|High: $5,766 NZD|Avg: $2,650 NZD|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 4$860 NZD
Retailer 2$983 NZD
Retailer 5$1,806 NZD
Retailer 3$2,097 NZD
Retailer 6$4,116 NZD
Brilliant Earth$4,506 NZD

43 data points across 6 retailers

7 retailers$860 NZD to $4,506 NZD

A
Cheapest Retailer
-
$860 NZD
A
Retailer 2
-
$983 NZD
View
B+
Retailer 3
-
$1,806 NZD
View
B+
Retailer 4
-
$2,068 NZD
View
B+
Retailer 5
-
$2,097 NZD
View
Retailer 6
-
$4,116 NZD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
16021313A · Nov 4
$4,506 NZD
$2,540 USD
View
6 more retailers have this diamond
Prices start from $860 NZDSave up to $3,646 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.

A
1.64ct Radiant
$860 NZD