Amethyst Necklace Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: By Product Type (Amethyst and Diamond Necklace, Amethyst and Gold Necklace, Amethyst and Silver Necklace, And Others); Distribution channel (Supermarkets and Hypermarkets, Specialty Stores, Online Retail, And Others) , and Geography (North America, Europe, Asia Pacific, and South and Central America)