Once the tree’s wood actually decomposed, which took thousands of years, it was replaced with opaline silica. The water in that silica was very rich in dissolved copper, iron, and manganese. Those copper and manganese deposits are now found inside this blue opal. The opalized brownish color on the outside of the stones is obviously petrified wood, but magic is inside. The lush, rich blue is feathered with manganese and native copper dendrites, some which look like snowflakes or feathers. Vermeil is a combination of Sterling Silver and Gold commonly used as a component in jewelry. A typical example is Sterling Silver coated with 18K or 24K Gold. To be considered VERMEIL, the gold must be at least 10 karats (42%) and be at least 2.5 micrometers thick. In the US and various other countries, S.
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