Astrophyllite 8mm Star Cut Coin - 15-16 Inch Size_2-3x4mm The addition of the rhodium

The addition of the rhodium plating not only protects these from oxidation but also highlights the Widmanstätten pattern

without the play of color present in more precious varieties

Seraphinite's chatoyancy (optical reflectance) gives it a feathery appearance associated with angels (also known as seraphim

decays and is exposed to mineral to rich water

as well as for brake shoes

Astrophyllite 8mm Star Cut Coin - 15-16 Inch Size_2-3x4mm The addition of the rhodiumAstrophyllite is a very rare, brown to golden yellow hydrous potassium iron titanium silicate mineral. Astrophyllite gets its name from the Greek words astron meaning "star" and phyllon meaning "leaf". The mineral is heavy, soft and fragile, and was first discovered in 1854 in Norway.