Andalusite market statistics

Andalusite

Color: strongly pleochroic, reddish brown, pink / yellowish green Hardness: 7 - 7.5 Refractive index: 1.63 - 1.65 Density: 3.13 - 3.21 Chemical composition: Al2SiO5 Crystal structure: orthorhombic Lustre: vitreous, greasy  Origins: Spain, Brazil, USA, Sri Lanka, Burma. Discovered in Andalusia (Spain), the andalusite stone is relatively rare, with big crystals over 10 ct. especially rare. Due to its remarkable pleochroism effect, the stone is highly valued by collectors.

Andalusite 1.46 cts. Published under permission: Miguel Angel Lopez

The figures are based on Gemval's aggregated valuation statistics for the retail market. Irrelevant, controversial or repeat data are excluded from our analysis wherever possible. The figures are updated monthly.

Weight distribution for Andalusite

Occurrence is represented in % for different weight categories.

Price distribution for Andalusite

Occurrence is represented in % for different value intervals.

Clarity distribution for Andalusite

Occurrence is represented in % for different clarity grades.

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