Mich. Comp. Laws § 500.628
"Surety and fidelity" insurance is to guarantee the fidelity of persons in positions of trust, private or public, and to act as surety on official bonds and for the performance of other obligations, and to indemnify banks, bankers, brokers, financial or moneyed associations, or financial or moneyed corporations, against the loss of any bills of exchange, notes, drafts, acceptances of drafts, bonds, securities, evidences of debt, deeds, mortgages, warehouse receipts, bills of lading, documents, currency, money, gold, platinum, silver and other precious metals refined or unrefined, and articles made therefrom, jewelry, watches, necklaces, bracelets, gems, precious and semi-precious stones, and also against loss, resulting from damage, except by fire, to the insured's premises, furnishings, fixtures, equipment, safes and vaults therein caused by burglary, robbery, holdup, theft or larceny, or attempt thereat. No such indemnity indemnifying against loss of any property as specified herein shall indemnify against the loss of any such property occurring while in the mail or in the custody or possession of a carrier for hire for the purpose of transportation, except for the purpose of transportation by an armored motor vehicle accompanied by 1 or more armed guards.
MCL 500.628