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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…
