Mexico, Sonora: Sonora Sunrise (or Sonora Sunset) is a rare, striking gemstone composed of vibrant red cuprite and blue-green chrysocolla, often streaked with black tenorite. Sourced primarily from the Milpillas Mine in Sonora, Mexico, this copper-oxide stone is prized for its vivid colors and, since the mine's closure in 2019, its increasing rarity. Wrapped in sterling silver and includes an 18” silver chain. This item qualifies for free shipping.