Tanzanite - 4.15 carats.
Tanzanite: the bluish purple to purplish blue gem variety of zoisite. Discovered in the 1960s near Mount Kilimanjaro, Tanzania, the new gem was popularised by Tiffany. It is favoured for its vivid colour saturation in fine specimens and for its very strong pleochroism (showing different hues when viewed from different directions). The majority of tanzanite sold has been heated to promote the intense colour.
I confess tanzanite is my least favourite blue gemstone. Perhaps that is because of its almost universal heat treatment or because it lacks any historical perspective. What I do prefer is the purplish blue colour, as shown here in my gem, to a bluish purple hue. What is your preference?
This tanzanite I’m selling is 4.15 carats, 10.1 x 8.5 x 6.3mm, cushion mixed cut, heated (of course!).
Photographed by me in natural London daylight, no filters.
Tanzanite: the bluish purple to purplish blue gem variety of zoisite. Discovered in the 1960s near Mount Kilimanjaro, Tanzania, the new gem was popularised by Tiffany. It is favoured for its vivid colour saturation in fine specimens and for its very strong pleochroism (showing different hues when viewed from different directions). The majority of tanzanite sold has been heated to promote the intense colour.
I confess tanzanite is my least favourite blue gemstone. Perhaps that is because of its almost universal heat treatment or because it lacks any historical perspective. What I do prefer is the purplish blue colour, as shown here in my gem, to a bluish purple hue. What is your preference?
This tanzanite I’m selling is 4.15 carats, 10.1 x 8.5 x 6.3mm, cushion mixed cut, heated (of course!).
Photographed by me in natural London daylight, no filters.
Tanzanite: the bluish purple to purplish blue gem variety of zoisite. Discovered in the 1960s near Mount Kilimanjaro, Tanzania, the new gem was popularised by Tiffany. It is favoured for its vivid colour saturation in fine specimens and for its very strong pleochroism (showing different hues when viewed from different directions). The majority of tanzanite sold has been heated to promote the intense colour.
I confess tanzanite is my least favourite blue gemstone. Perhaps that is because of its almost universal heat treatment or because it lacks any historical perspective. What I do prefer is the purplish blue colour, as shown here in my gem, to a bluish purple hue. What is your preference?
This tanzanite I’m selling is 4.15 carats, 10.1 x 8.5 x 6.3mm, cushion mixed cut, heated (of course!).
Photographed by me in natural London daylight, no filters.