A rare silicate mineral containing zirconium and other elements, typically found in alkaline igneous rocks.
From Greek eu- 'good' + dia- 'through' + lyte 'dissolvable', referring to how the mineral breaks down in acid. Named in 19th-century mineralogy.
Eudialyte is a collector's gem—it's rare enough to excite geologists but pretty enough (pink to reddish) that jewelry makers covet it too!
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