New vintage white jade teardrop pendant

New vintage white jade teardrop pendant Quick list. Measurements to follow. Genuine stone. Milky Cream-pale green colour. But I’m not sure if it’s white jade. New vintage c. 1970s. Genuine stone (just not white jade). Goldtone metal. Probably made in Korea. Hallmark on bail: ???? But most of the hallmarks from this company say “NICCOP”? or “NICSOP”? or “SILVER”. Group photo shows variety in the collection. Chain not included.