1.75 carats total weight Marquise Shape Swiss Blue Topaz White CZ Gemstone Necklace in Sterling Silver Stones: Genuine Swiss Blue Topaz: 1 piece, Marquise Shape 12x6mm, 1.75 carats total weight White Cubic Zirconia: 2 pieces, Marquise Shape 10x5mm Gemstones have a deep rich color and tremendous fire. Necklace: 3.50 grams Pure Sterling Silver with .925 stamp Rolo Style 16 to 18 inch adjustable length, 2 7/8 width Approximate Retail Value: $99.99 Necklace features a one of a kind design with a beautiful White Gold finish.