Bi-colour gemstones display two distinct colours within a single stone — a natural phenomenon that makes each one utterly unique. Browse our watermelon tourmalines, bi-colour sapphires, and more.
Bi-colour gemstones are nature's most dramatic expression of colour 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-colour stone is entirely unique.
Bi-colour gemstones display two distinct colours within a single stone — a natural phenomenon that makes each one utterly unique. Browse our watermelon tourmalines, bi-colour sapphires, and more.
Bi-colour gemstones are nature's most dramatic expression of colour 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-colour stone is entirely unique.
