Standard homeowners insurance policies cover personal items, including jewelry. Your policy protects these items under personal property coverage.
The personal property coverage from your homeowners insurance policy covers the cost of replacing or repairing personal items you have insured in case of loss or damage due to a covered peril.
However, if your jewelry is very expensive, your personal property limits may not be enough to cover it. In that case, you'll need to purchase a scheduled personal property endorsement, which is supplemental coverage to fully cover valuable items.