Doesnt have to be this exact one, its espwnsive. But the look is right. Sapphire Necklace, 3.80 carat, Blue Sapphire Necklace, Sapphire Pendant, Sapphire Solitaire, Silver Sapphire Necklace, September Birthstone by Bihls on Etsy https://www.etsy.com/listing/459102392/sapphire-necklace-380-carat-blue

Sapphire Necklaces
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Artisan jewelry, entirely handmade and designed by David Worcester using Argentium 960 high purity silver, 14k yellow gold, and gemstones. Please visit us at https://www.etsy.com/shop/VerbenaPlaceJewelry14k White Gold Diamond And Sapphire Fashion 18K W/G Diamond & Black Diamond & Blue Sapphire NECKLACE | Jewellery Collection Simple Gold and Sapphire Necklace Simple Gold and Sapphire Necklace Mm_diamondsjewellers. Spectacular sapphire and diamond necklace. Marvellous colour. Astonishing jewel. Sumptuous gift. Royal jewellery. #diamonds #diamond #sapphires #necklace #jewelry

Refer: https://www.etsy.com/listing/459102392/sapphire-necklace-380-carat-blue