Necklace by Margot McKinney Jewelry. 18-karat white gold with satin finish. Four denim blue topaz pebble stations. Naturally colored, baroque South Sea cultured pearls. Four pavé icy and white diamond accent stations. 126. 06 total blue topaz carat weight. 14. 10 total icy diamond carat weight. 0. 10 total white diamond carat weight.