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Natural Unheated Tanzanite Crystal Specimen Pleochroic Blue Violet, Merelani Hills Tanzania, 22.5ct to Pinterest (opens in a new window) 

£349.99
What I love about this particular Tanzanite is the colour. At first glance, there’s a beautiful blue running through the crystal, but turn it in the light and you start seeing violet, purple and even golden-yellow. It’s a lovely example of the pleochroism that makes natural, unheated Tanzanite so interesting to collect. The video really…
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Unheated Tanzanite Crystal Pleochroic Mineral Specimen, Merelani Hills, Tanzania, 56.5ct to Pinterest (opens in a new window) 

£899.99
What I love about this Tanzanite is just how much its appearance changes as you turn it in the light. From one angle, you’re looking at beautiful violet-purple and deep blue, but rotate it slightly and these wonderful golden-yellow tones begin to appear, along with occasional warm, almost coppery reflections. It’s a fantastic example of…
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Tanzanite Unheated Mineral Specimen from Merelani Hills, Pleochroic Crystal to Pinterest (opens in a new window) 

£449.99
This natural, unheated Tanzanite crystal cluster from the Merelani Hills of Tanzania displays pronounced pleochroism, revealing violet-purple, blue and golden-yellow hues when viewed from different angles. Weighing 22 carats (4.4 grams), the specimen retains the distinctive natural colour characteristics prized by collectors of unheated Tanzanite. Its lavender-purple body contrasts with pale golden-yellow terminations, while deeper…