An art deco style necklace, crafted from sterling silver, featuring an oval shaped faceted blue topaz gemstone, decorated with glimmering marcasite gemstones.blue topaz Information: Number of Stones: 1 Stone Shape: Oval Stone Size: 4mm x 3mm Carat Weight: 0.19ct Natural/Created: Natural blue topaz Country of Origin: Brazil marcasite Information: Number of Stones: 3 Stone Shape: Round Stone Size: 1.20mm Carat Weight: 0.03ct Natural/Created: Natural marcasite Country of Origin: Austria