A "Calf Head Necklace" doesn't seem to be a commonly recognized or widespread term in the realm of jewelry or fashion as of my last update in September 2021. It's possible that this term could refer to a specific style or design of necklace that features a calf head as a pendant or focal point. However, without more context or information, I can't provide specific details about such a necklace.

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Western American Cowgirl Native Bohemian Cotton and Linen Drawstring Jewelry Purse-Blue