Different jewelers generally have a preference for one type of metal because of its quality, malleability, coloration, or other properties.
Malleability refers to the extent to which temperament can be influenced or reshaped by later life events.
Another illustration of the malleability of metal is afforded by metal spinning.
Substances having high specific gravity, malleability, opacity, and especially a peculiar lustre, the term "metal" became generic for all substances with these properties.
Iron renders the metal hard and brittle; arsenic, antimony and bismuth (up to 0.5%) reduce its tenacity; copper and lead (1 to 2%) make it harder and stronger but impair its malleability; and stannous oxide reduces its tenacity.