What is the definition of investment precious metals in Israel?

Investment precious metals are gold and silver stored in a third party vault for a period of three months in the following forms, as;
(a) legal tender gold and silver bullion coins; and
(b) gold bullion rounds and bars (in an investment form) of at least 99.5% fineness; and
(c) silver bullion rounds and bars (in an investment form) of at least 99.9% fineness.