THE GEMHOOD EDITORIAL LIBRARY
Prasiolite gemstone guide
Prasiolite is green quartz; commercial material is commonly produced by heating suitable amethyst or other quartz. Disclose known heat treatment and avoid presenting a familiar green colour as proof of natural untreated origin.
Gem facts · Quality considerations · Care & meaning
A study in colour and character
Every shade has a story.
Typical appearances for Prasiolite. Natural stones vary, and lighting or treatment can change their appearance.
Where Prasiolite is found
Brazil; treated material widely traded
Brazil
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 Prasiolite?
Prasiolite is green quartz; commercial material is commonly produced by heating suitable amethyst or other quartz. Typical material appears in light green to grey-green shades, and is commonly described as green quartz variety. The Mohs hardness for this material is approximately 7; hardness refers to resistance to scratching, not to breaking, cleavage or sensitivity to chemicals. Disclose known heat treatment and avoid presenting a familiar green colour as proof of natural untreated origin. Typical geological or commercial source regions include Brazil; treated material widely traded; this does not establish the provenance of an individual gem. Quartz tolerates mild soapy water, but protect cut edges and avoid extreme thermal changes. Ask for confirmation of identity, natural or lab-created status, and any treatments when choosing an individual stone.
History and cultural context
Prasiolite is included in this educational directory for its distinctive material, appearance and cultural or collector interest. Prasiolite is green quartz; commercial material is commonly produced by heating suitable amethyst or other quartz. Gem varieties and trade names can overlap: the precise identity of a particular specimen should be independently confirmed when relevant.
Colour and appearance
Light green to grey-green
Jewellery suitability
Disclose known heat treatment and avoid presenting a familiar green colour as proof of natural untreated origin.
Caring for Prasiolite
Quartz tolerates mild soapy water, but protect cut edges and avoid extreme thermal changes.
Cleaning guidance
Quartz tolerates mild soapy water, but protect cut edges and avoid extreme thermal changes.
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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.