Samantha the Dressmaker - S2-E22
Revealing mistake: When Samantha and Endora are in Paris reviewing models in dresses, the models are frozen because Samantha and Endora are not supposed to be in the dress shop. One of the models, instead of being frozen, is seen blinking her eye and moving slightly.
Answer: The original diamond and white gold heart necklace was given to Elizabeth Montgomery by her then real-life husband, William Asher, who also directed the show. She wore it in nearly every early episode. When the necklace was lost or stolen about mid-way through the series, Montgomery had two replicas made from rhinestones. She wore either one of those for the rest of the show's run.
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