Vintage style antiqued silver necklace large red oval faceted stones bezel set

Vintage style handmade antiqued silver necklace large red oval faceted stones bezel set, 18” length. Stunning gorgeous necklace from Vietnam. Was told it was sterling silver with semi precious gemstones. But I have not had it apprised. No fineness mark on it. Specifications NOT verified. Metal is not magnetic, but could be other metals. Real or not, it’s gorgeous!