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Radiant|Lab Grown|IGI

1.64ct F VS1 Radiant Lab Grown Diamond

ID • F/VS1 • IGI LG678577836

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

Certificate IGI LG678577836

Diamond specifications and retailer prices

From $843 AUD
$592 USD
As of November 2, 2026
Save $296 AUD (26%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,139 AUD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG678577836 or 678577836. Listed at 2 retailers as of October 31, 2026, with prices from $843 to $1,139, a $296 spread on the same certified stone. Diamond Quarter lists it at $1,139. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678577836
Dimensions8.58 × 5.68 × 3.92 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.58 mm5.68 mm1.64 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678577836
Side View
Table 65.0%Crown 41.5°Girdle: MediumPavilion 36.5°Culet: NoneDepth 69.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $843 AUD|Low: $821 AUD|High: $3,474 AUD|Avg: $2,210 AUD|-33.0%
Retailer 1
Retailer 2
Retailer 3
September 23, 2026
Retailer 1$843 AUD
Retailer 2$1,684 AUD
Retailer 3$3,474 AUD

6 data points across 3 retailers

2 retailers$843 AUD to $1,139 AUD

A
Cheapest Retailer
-
$843 AUD
$592 USD
Most Expensive
B+
Diamond Quarter
1.64VS1FLG36B691N · Oct 31
$1,139 AUD
£630 GBP
View
1 more retailer has this diamond
Prices start from $843 AUDSave up to $296 AUD

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
$843 AUD