THE GEMHOOD EDITORIAL LIBRARY
Andalusite gemstone guide
Andalusite is valued for strong pleochroism, showing different body colours when observed from different directions. Assess the actual stone from more than one viewing angle, as orientation greatly affects its green and warm brown tones.
Gem facts · Quality considerations · Care & meaning
A study in colour and character
Every shade has a story.
Typical appearances for Andalusite. Natural stones vary, and lighting or treatment can change their appearance.
Where Andalusite is found
Brazil; Sri Lanka
Brazil
Sri Lanka
These are representative geological or commercial sources, not certified provenance for an individual stone. Country of origin should be substantiated independently when relevant to value.
What is Andalusite?
Andalusite is valued for strong pleochroism, showing different body colours when observed from different directions. Typical material appears in olive green, brown, pinkish and yellow shades, and is commonly described as aluminium silicate mineral. The Mohs hardness for this material is approximately 7–7.5; hardness refers to resistance to scratching, not to breaking, cleavage or sensitivity to chemicals. Assess the actual stone from more than one viewing angle, as orientation greatly affects its green and warm brown tones. Typical geological or commercial source regions include Brazil; Sri Lanka; this does not establish the provenance of an individual gem. Clean gently in warm soapy water and avoid impacts against cleavage directions. Ask for confirmation of identity, natural or lab-created status, and any treatments when choosing an individual stone.
History and cultural context
Andalusite is included in this educational directory for its distinctive material, appearance and cultural or collector interest. Andalusite is valued for strong pleochroism, showing different body colours when observed from different directions. Gem varieties and trade names can overlap: the precise identity of a particular specimen should be independently confirmed when relevant.
Colour and appearance
Olive green, brown, pinkish and yellow
Jewellery suitability
Assess the actual stone from more than one viewing angle, as orientation greatly affects its green and warm brown tones.
Caring for Andalusite
Clean gently in warm soapy water and avoid impacts against cleavage directions.
Cleaning guidance
Clean gently in warm soapy water and avoid impacts against cleavage directions.
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Educational articles describe gemstone types and common trade practices. They are not individual gemological certificates, current price appraisals or medical advice.