0.50 carats total weight Princess Cut Swiss Blue Topaz White CZ Gemstone Necklace in Sterling Silver Stones: Genuine Swiss Blue Topaz: 1 piece, Princess Cut 5.00mm, 0.50 carats total weight White Cubic Zirconia: 7 pieces, Round Shape 3.00mm Gemstones have a deep rich color andtremendous fire. Necklace: 3.50 grams Pure Sterling Silver with .925 stamp Box Style 16 to 18 inch adjustable length, 1 5/8 width Approximate Retail Value: $69.99 Necklace features a one of a kind design with a beautiful White Gold finish.