relating to or resembling adularia, a type of feldspar mineral that shows a milky, glowing sheen.
From 'adularia' (a feldspar variety found in the Adula Alps in Switzerland) plus the suffix '-ar' (of or relating to). The mineral was named after its geographic location.
Moonstone, the opalescent gem with a floating glow inside, is often adularia feldspar—that ghostly light effect happens because of super-thin layers that bend light, similar to how a pearl shimmers.
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