Bi-color sapphires, also known as parti-colored sapphires, are gemstones that exhibit two or more distinct colors within a single stone, a rarity that makes them highly sought after by collectors and jewelry enthusiasts.

Here's a more detailed look at bi-color sapphires:

Key Characteristics:

• Color Zoning:

  The desirability of bi-color sapphires often depends on the zoning or location of the colors, their saturation, and the contrast between them.

• Natural Occurrence:

  Bi-color sapphires are naturally occurring and cannot be created synthetically.

• Rarity:

  They are much rarer than single-toned sapphires, as their formation requires specific geological conditions.

• Color Combinations:

  Bi-color sapphires can feature a variety of color combinations, including blue and yellow, blue-green and yellow, blue and pink, and more.

• Gradual Color Transitions:

  Some of the most desirable bi-color sapphires exhibit gradual color transitions, starting with one color and transitioning into another complementary hue.

• Cut and Size:

  Bi-color sapphires can be cut into various shapes, just like standard color sapphires, and are often smaller in size.