Can an estate executor sell a necklace to which I hold a hand written and signed note directing I receive same?

If you have a handwritten and signed note stating that you are to receive the necklace, this may serve as evidence of the decedent's intent. However, the executor has a legal obligation to manage the estate according to the will and applicable laws, which may require them to sell assets to pay debts or distribute according to the will. It's advisable to communicate with the executor and possibly seek legal counsel to ensure your rights are protected.