When compared to amethyst, tanzanite is a slightly softer stone. Its hardness on the Mohs Scale is approximately 6.5, while amethysts are 7.
Tanzanite has remained more expensive and valuable than Amethyst because of its scarcity.
Tanzanite is more dense than amethyst, according to geologists. Amethyst has a density of 2.66 while Tanzanite has a density of 3.35.
Tanzanite can be found in a variety of colors, including blue, pink, yellow, and green, although blue is the most prevalent and dominating of all the hues. Hence, blue zoisite is its mineralogical name. On the other hand, amethyst features mild lavender and violet undertones in addition to its dominating color of purple.
Tanzanite possesses an orthorhombic crystallization structure, just like any other form of zoisite. Amethyst, on the other hand, has a hexagonal crystal structure.
Despite the two stones' great differences in color and shape, they are stunning and astonishingly heighten elegance.