Saks Fifth Ave Sterling Silver & Natural Diamond Necklace Earrings Set

925 stamped. Diamond accents. Two size options for length of necklace. It was a gift so I’m not sure of the brand - it came in a Saks gift box. I put pricing at $500 so stones and metal will be authenticated by Posh but I am open to offers. Never worn. Owned for probably 5-7 years. Chain length 18” with smaller option at 16”. Pendant is 0.5” x 0.5”. Earrings are same size as pendant.