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Unheated Tanzanite is a natural, untreated gemstone that exhibits a range of colors including blue, purple, and green due to its trichroic nature. It is a variety of the mineral zoisite, found exclusively in Tanzania, near the foothills of Mount Kilimanjaro. Unlike most Tanzanite, which is heat-treated to enhance its blue color, unheated Tanzanite retains its natural hues and is prized for its unique and authentic color variations.

Here's a more detailed look at unheated Tanzanite:

• Natural Color:

  Unheated Tanzanite comes in a variety of colors, including blue, purple, green, and even pastel shades like peach or lavender.

• Trichroism:

  The stone exhibits trichroism, meaning it displays different colors when viewed from different angles.

• Rarity:

  Unheated Tanzanite is rarer than diamonds and is considered an investment-grade gemstone.

• Clarity:

  Unheated Tanzanite that is clear is even rarer.

• Heating Process:

  Most Tanzanite is heat-treated to enhance its blue color and remove undesirable brown or yellow hues.

• Uniqueness:

  Each unheated Tanzanite stone is unique and reflects its natural origin in Tanzania