Dont know but ask . com sucks they dont even know most of the answers :0
Sounds like a Berberis.
Yellow
Chalcopyrite is a yellow copper ore.
This stone is yellow.
it catches fire with a multi coloured flame.
blue coloured
Copper carbonate hydroxide -Cu2CO3(OH) - is formed on the surface.
Use a coloured pencil
black
There were no copper 50 Pence coins minted, they are all made from a copper/nickel alloy giving them a silvery appearance. If your coin is copper coloured, it is either very seriously tarnished or somebody has plated it. Modified coins have no collector value.
roseta (Spanish spelling) = small rose; rosette; rose-coloured cheek; also (in metallurgy) rose-coloured copper
neutral yellow coloured chelate