This exquisite variety of gemstone is a derivative of the zoisite mineral. Tanzanite is found in only one part of the world, Tanzania. It is therefore named after the location. Pleochroism enables tanzanite to display a wide range of colors, especially when viewed from various angles.
Tanzanite must be cut accurately in order for its violet and blue hues to be highlighted. Most of the sourced tanzanite that you see in the market is treated with heat so that their brown undertone is minimized. Heat treatments enhances the blue hue of the gemstone and it can definitely rival sapphires.
Tanzanite is sourced just a few miles near the Kilimanjaro Mountain. Its availability and price is determined by the mines of that region.
On the Moh’s scale of hardness, tanzanite ranks 7. Due to its ability to easily incur scratches, it is best suited for pendants and earrings.
Turquoise has been admired by cultures and civilizations around the world. It bares a green to blue color that is highly prized. The term “turquoise” was first coined Pierre Tourques in the 13th century who made references to it as the “Turkish stone”.
Blue turquoise was traditionally sourced from Persia. Sinai Peninsula in Egypt is another historical source for this gemstone. In modern times, the United States is the largest source for turquoise, particularly in the states of New Mexico, Nevada, Colorado and California. Arizona is the leader in producing the blue variety of turquoise. The popularity of this stone in this region makes it a staple amongst Native Americans.
Turquoise ranks 6 on the Moh’s scale of hardness. It was prized by many cultures, from the Persians to the Egyptians and even the Native Americans and Aztecs. Wearing turquoise is thought to provide the wearer power and protection from falls.