- a kind of glass flecked with spangles, as from copper filings or bits of chromic oxide
- a translucent mineral containing reflective particles; specif., a variety of chert that contains sparkling bits of mica, hematite, etc.
Origin of aventurineFrench from Italian (vetro) avventurino, aventurine (glass): so named from resembling the mineral avventurina ( from avventura, chance), so named from its rarity: see adventure
- An opaque or semitranslucent brown glass flecked with small metallic particles, often of copper or chromic oxide.
- Any of several varieties of quartz or feldspar flecked with particles of mica, hematite, or other materials. Also called sunstone .
Origin of aventurineFrench from aventure accident (so called because of its accidental discovery or the randomness of inclusions in it) ; see adventure .