Dear Tom,What are mother-of-pearl clouds?Oscar Johns, WilmetteDear Oscar,They are polar stratospheric clouds, also known as nacreous clouds or simply pearl clouds. They are rare, high altitude clou… ...

Nacre, also known as mother-of-pearl, then forms a layer around the irritant to protect the mollusk. Nacre gives the pearl its luster and gem-like sheen.

Mother-of-pearl, also known as nacre, is not just aniridescent substance whose optical characteristics impress the observerand which is often used for jewellery.

Nacre, or Mother-of-Pearl, is one of the more intriguing natural materials with potential in the manufacturing of armor — thanks to a few unique characteristics.

Mother of Pearl’s new collaborator isn’t a model, an influencer, or even another fashion brand; it’s a TV channel.Earlier this year, designer Amy Powney partnered with BBC Earth on a ...