Product Details Faceted in White Sapphire, Blue Sapphire or Herkimer Diamond Necklace length is adjustable from 16 to 18 inches. Safe for sensitive skin. Available in 14k Gold Filled or Sterling Silver. Herkimer Diamond Necklace, Blue Sapphire Necklace, Sapphire Necklace, Herkimer Diamond, Sapphire Blue, White Sapphire, Necklace Length, Blue Sapphire, Sensitive Skin