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JOALYS Collection

Tanzanite Collection

Tanzanite is a mesmerizing blue-violet gemstone found exclusively in the foothills of Mount Kilimanjaro, Tanzania. Discovered in 1967, it is 1,000 times rarer than diamond and prized for its extraordinary trichroism,displaying blue, violet, and burgundy from different angles.

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Tanzanite: A Single-Source Wonder

Tanzanite is a variety of zoisite that owes its color to vanadium. It exists in only one place on Earth: a 4km strip near Merelani, Tanzania. Most rough is heat-treated to transform brown tones into the coveted blue-violet. Fine tanzanite rivals sapphire in beauty at a fraction of the cost.

Investment Potential

With a single finite source, tanzanite's supply is expected to be exhausted within 20-30 years. This makes it one of the few gemstones with genuine scarcity-driven investment potential. 6.5-7 Mohs hardness.

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Frequently Asked Questions

Why is tanzanite so rare?
Tanzanite exists in only one location on Earth: a small area near Mount Kilimanjaro, Tanzania. The deposit is finite and expected to be depleted within decades.
Is tanzanite a good investment?
Yes. As a single-source gemstone with finite supply, tanzanite has strong investment potential. Prices have risen steadily as the mine approaches depletion.
What color tanzanite is most valuable?
Deep, saturated blue-violet with strong pleochroism is most prized. The finest stones show vivid blue face-up with violet flashes.
Is tanzanite treated?
Most tanzanite is heat-treated to enhance its blue-violet color. This is a permanent, stable treatment universally accepted in the industry.