Tasha Necklace Tasha is a grey, adjustable necklace in wood and resin with aluminium accent CARE: Avoid water and other liquids on wooden beads.If marks appear, lightly polish using a soft cloth with a little mineral oil. Alternatively, coconut or linseed oil may be used. Avoid water and other liquids on wooden beads. Brass, copper and aluminium can all be cleaned using a soft cloth with Brasso.