They are crafted of sterling silver.
.78 ct Blue Sapphire & White Topaz Round Halo Slide Pendant Necklace in Sterling Silver 3/4 ct Created Sapphire Blue Round Created Sapphire September Birthstones Spring Ring Metal Stamp: 925 Sterling Necklace Length: 18 to 19.0 grams Included in the box: Pendant Chain Pouch Made in Thailand Blue Sapphire & White Topaz Round Halo Slide Pendant Necklace in Sterling Silver Blue Round 3/4 ct Spring Ring Blue Sapphire & White Topaz Round Halo Slide Pendant Necklace in Sterling Silver This attractive halo necklace features a round created blue sapphire gemstone surrounded by smaller white topaz accents.