Gemstones · Bicolour

Bi-Color Gemstones

Bi-color gemstones display two distinct colors within a single stone — a natural phenomenon that makes each one utterly unique. Browse our watermelon tourmalines, bi-color sapphires, and more.

Shape
Gem Type
Color
Mine of Origin
Carat · 0.00 – 30.00 ct
Price · $0 – $1,400,000
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Bi-Color Gemstones

Bi-color gemstones are nature's most dramatic expression of color variation — a single crystal containing two (or more) distinctly different hues. This phenomenon, caused by changes in trace element concentrations as the crystal grows, is most famously seen in watermelon tourmaline (pink core, green rind) and parti sapphires (yellow-blue combinations). Each bi-color stone is entirely unique.

  • Watermelon Tourmaline: the most iconic bi-color gem; pink center with a green outer zone.
  • Parti Sapphire: sapphires showing two or three colors (typically yellow-green-blue combinations).
  • Bi-Color Tourmaline: any tourmaline showing two distinct color zones.
Gemstones · Bicolour

Bi-Color Gemstones

Bi-color gemstones display two distinct colors within a single stone — a natural phenomenon that makes each one utterly unique. Browse our watermelon tourmalines, bi-color sapphires, and more.

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Bi-Color Gemstones

Bi-color gemstones are nature's most dramatic expression of color variation — a single crystal containing two (or more) distinctly different hues. This phenomenon, caused by changes in trace element concentrations as the crystal grows, is most famously seen in watermelon tourmaline (pink core, green rind) and parti sapphires (yellow-blue combinations). Each bi-color stone is entirely unique.

  • Watermelon Tourmaline: the most iconic bi-color gem; pink center with a green outer zone.
  • Parti Sapphire: sapphires showing two or three colors (typically yellow-green-blue combinations).
  • Bi-Color Tourmaline: any tourmaline showing two distinct color zones.