A stunning simple elegant necklace design crafted from sterling silver set with a pear cut opal cabochon gemstone offset with sparkling marcasite on an 18\" sterling silver chain, which fastens with a sprung ring clasp Pair this with the matching sterling silver opal & marcasite earrings to create a wonderful October birthstone set Opal Information: Number of Stones: 1 Stone Shape: Pear Stone Size: 5x4mm Carat Weight: 0.20ct Natural/Created: Natural Mined Stone Country of Origin: Australia birthstone: October | Zodiac: Libra | Wedding Anniversaries: 14th marcasite Information: Number of Stones: 2 Stone Shape: Round Stone Size: 1.20mm Carat Weight: 0.024ct Natural/Created: Natural Mined Stone Country of Origin: Austria