20.25 carats total weight Round Shape Swiss Blue TopazMulti-Gemstone Necklace in Sterling Silver Stones: Genuine Swiss Blue Topaz: 1 piece, Round Shape 8.00mm Genuine Swiss Blue Topaz: 5 pieces, Round Shape 7.00mm Genuine Swiss Blue Topaz: 7 pieces, Round Shape 6.00mm Genuine Swiss Blue Topaz: 4 pieces, Round Shape 5.00mm 20.25 carats total weight Gemstones have a deep rich color and tremendous fire. Necklace: 8.55 grams Pure Sterling Silver with .925 stamp Serpentine Style 16 to 18 inch adjustable length, 3 5/8 width Approximate Retail Value: $229.99 Necklace features a one of a kind design with a beautiful White Gold finish.