Shop All › Montana Agate Necklace Image 1 of 3 Image 2 of 3 Image 3 of 3 Montana Agate Necklace $942.00 One-of-a-kind agate set in textured 18K gold. Handmade in Seattle. On an 18” 18K solid gold chain. Add To Cart Added! One-of-a-kind agate set in textured 18K gold. Handmade in Seattle. On an 18” 18K solid gold chain. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More