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12 - 35 $3.25

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Mona Lisa Turquoise™, mined years ago from the now-long-abandoned Mona Lisa mine in the Porter Mountain Ridge in Arkansas, provides an unexpected treasure trove in its unique look and attractive price point. This turquoise displays a sky-blue turquoise color with a mix of both dark and golden-yellow matrix. Now being cut to highlight these characteristics, these stones feature a one-of-a-kind matrix patterns—the golden color interspersed with the darker tones of the matrix ensures a vibrant and eye-catching addition to your designs. Turquoise is one of the birthstones for December.

Turquoise is a soft, opaque gemstone that takes a good polish. The blue color comes from the presence of copper; green tones are provided by iron traces. Natural turquoise is untreated, chemically or otherwise. Treatments for turquoise include electrochemical enhancement to improve color and stabilization with resins that darken and harden the stone. Individual types of turquoise are usually named according to their source.

Rio is proud to offer the American Mined™ Collection, a growing selection of gemstones sourced from mines located here in America. These gemstones consistently present the excellent color, clarity and quality we look for in every stone we offer you. Each of these gemstones allows us to provide a clear, documentable path from the mine to your bench; you and your customers can be confident that every one is mined, cut and processed under conditions that meet all standards for worker safety, environmental protection and responsible production.

  • Cutting Center : India
  • Mineral source : Arkansas, U.S.
  • Brand : American Mined
  • Stone size : 4mm
  • Stone(s) shape : Round
  • Material : Turquoise
  • Stone type : Natural
  • Color : Blue Green
  • Mohs hardness : 5–6
  • Refractive index : 1.61
  • Enhancement : Stabilized (S)
  • Specific gravity (g/cm3) : 2.89

Please Note:

• Care: Clean with warm, soapy water; never clean using steam or ultrasonics.
• Mined in America, this gemstone material is sent to India for cutting.