4.50 carats total weight Pear Round Shape Swiss Blue TopazMulti-Gemstone Necklace in Sterling Silver Stones: Genuine Swiss Blue Topaz: 1 piece, Pear Shape 10x7mm Genuine Swiss Blue Topaz: 8 pieces, Round Shape 4.00mm 4.50 carats total weight Gemstones have a deep rich color and tremendous fire. Necklace: 5.20 grams Pure Sterling Silver with .925 stamp Box Style 16 to 18 inch adjustable length, 2 width Approximate Retail Value: $99.99 Necklace features a one of a kind design with a beautiful White Gold finish.