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.51" Brilliant Bicolored Tanzanite Crystal - Merelani Hills, Tanzania
This is a beautiful, .51" wide tanzanite crystal collected from the Merelani Hills in the Manyara Region of Tanzania. It exhibits a separated blue and yellow-green color from one angle and a violet color from another. This pleochroic effect is especially evident when backlighting the crystal.
It has been mounted to an acrylic display base.
It has been mounted to an acrylic display base.
About Tanzanite
Tanzanite is a striking blue-violet variety of zoisite, renowned for its vibrant color, which results from vanadium substituting within the zoisite crystal structure. This unique gemstone is found exclusively in the Arusha and Manyara regions of Tanzania, the country for which it’s named. Revered in the gemstone community, tanzanite is celebrated for its captivating hue and its pleochroic property, which allows it to display different colors when viewed from various angles. Before faceting, gem cutters carefully assess this pleochroism to ensure that the stone is cut at an angle that maximizes its vivid blue-violet color. However, due to its relative softness, tanzanite is more suited for certain types of jewelry where it won’t be subject to daily wear.
Zoisite, the mineral family to which tanzanite belongs, is part of the epidote group and has the chemical formula Ca₂Al₃(SiO₄)(Si₂O₇)O(OH) (calcium aluminum hydroxy sorosilicate). This mineral appears in various colors, including green, pink, brown, yellow, gray, white, blue, purple, and colorless. Each color results from different ion substitutions within the crystal lattice; for instance, thulite is a pink variety of zoisite, colored by manganese substituting for calcium within the structure. Originally known as saualpite, zoisite offers a fascinating variety of colors and forms in the mineral world.
Tanzanite is a striking blue-violet variety of zoisite, renowned for its vibrant color, which results from vanadium substituting within the zoisite crystal structure. This unique gemstone is found exclusively in the Arusha and Manyara regions of Tanzania, the country for which it’s named. Revered in the gemstone community, tanzanite is celebrated for its captivating hue and its pleochroic property, which allows it to display different colors when viewed from various angles. Before faceting, gem cutters carefully assess this pleochroism to ensure that the stone is cut at an angle that maximizes its vivid blue-violet color. However, due to its relative softness, tanzanite is more suited for certain types of jewelry where it won’t be subject to daily wear.
Zoisite, the mineral family to which tanzanite belongs, is part of the epidote group and has the chemical formula Ca₂Al₃(SiO₄)(Si₂O₇)O(OH) (calcium aluminum hydroxy sorosilicate). This mineral appears in various colors, including green, pink, brown, yellow, gray, white, blue, purple, and colorless. Each color results from different ion substitutions within the crystal lattice; for instance, thulite is a pink variety of zoisite, colored by manganese substituting for calcium within the structure. Originally known as saualpite, zoisite offers a fascinating variety of colors and forms in the mineral world.
SPECIES
Zoisite var. Tanzanite
LOCATION
Merelani Hills, Lelatema Mountains, Manyara Region, Tanzania
SIZE
.51" wide, .40" tall measurement
CATEGORY
SUB CATEGORY
ITEM
#308327
