4.00 carats total weight Marquise Round Shape Swiss Blue Topaz Multi-Gemstone Necklace in Sterling Silver Stones: Genuine Swiss Blue Topaz: 5 pieces, Marquise Shape 8x6mm Genuine Swiss Blue Topaz: 1 piece, Round Shape 4.00mm 4.00 carats total weight Gemstones have a deep rich color and tremendous fire. Necklace: 3.95 grams Pure Sterling Silver with .925 stamp Serpentine Style 16 to 18 inch adjustable length, 1 5/8 width Approximate Retail Value: $99.99 Necklace features a one of a kind design with a beautiful White Gold finish.