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Tanzanite is a beautiful gem. In addition to its beauty, it has some properties that require it to be given special care. Tanzanite is best suited for earrings, pendants, and other jewelry items that will not encounter abrasion and impact. It is less suited for use in a ring. Many jewelers recommend that “tanzanite rings…

Tanzanite is like all other gems in that small stones are more abundant than larger stones. Most faceted tanzanites are under five carats in weight. Stones over fifty carats are very rare. Small stones are typically cut into calibrated sizes for use in commercial jewelry. Those with top-grade color are the most valuable and often…

Tanzanite is a pleochroic gem. Pleochroism is a physical property in which the material appears to be different colors when viewed from different crystallographic directions. Some specimens of tanzanite can be a distinct blue when viewed from one direction, and vary from violet to reddish when viewed from other directions. The group of three photos…

The four blue faceted gemstones that are most often seen in commercial jewelry in the United States are aquamarine, topaz, sapphire, and tanzanite. Although they are all “blue” in color, each one is unique. Tanzanite occurs in a range of tones and color saturations that will appeal to almost any buyer who likes any of the other blue…