Tanzanite is renowned for its stunning blue and violet hues, but it can exhibit a range of colors due to its pleochroic nature, which means it can show different colors when viewed from different angles. Blue Tanzanite is the most popular and valued color of tanzanite. The blue can range from a light, sky-blue to a deep, rich cobalt blue. The depth of blue often increases with the size of the gemstone. Larger Stones tend to exhibit more intense blue hues. Violet tanzanite displays a range of purples, from light lilac to deep violet. This color is also highly prized, though not as much as the deep blue variety. The violet color can often be seen alongside blue in pleochroic stones, adding to the gem’s unique visual appeal.

Green tanzanite, also known as "chrome tanzanite," is rarer and exhibits shades of green due to trace amounts of vanadium. While less common, green tanzanite is not as highly valued as the blue or violet varieties. Untreated tanzanite can exhibit brown or yellow hues. These colors are typically transformed into blue or violet through heat treatment. These colors are less desirable in the market and are often subjected to heat treatment to enhance their appeal. Natural (Untreated) Tanzanite is in its natural state without any heat treatment. 

Tanzanite’s captivating range of colors and types makes it a versatile and highly desirable gemstone. Whether in its deep blue, vibrant violet, or rarer hues, each piece of tanzanite offers a unique beauty. Understanding the various colors and types, along with their respective market values, can help buyers and enthusiasts appreciate the full spectrum of this remarkable gemstone. Tanzanite is multicolored, which means that it shows different colors depending on the viewing angle. In order to get the best blue or violet blue color, the gem cutter must cut the right angle. The dark blue of tanzanite can resemble sapphire, which is why this Stone is so popular. The extraordinary color of tanzanite becomes more colorful after heating and its brown tone disappears.

Tanzanite is one of the Minerals that was first discovered in Tanzania and is the only source so far. This Gemstone belongs to the Zosite group of minerals with the Chemical formula, calcium Aluminum silicate, which has a hardness of 6.5 to 7. Tanzanite stone is blue and purple in color, but according to the light source, similar to Alexandrite stone, it shows different colors, which is due to the presence of vanadium in it. The dark blue color of tanzanite stone is similar to sapphire, which becomes darker after heating.

Royal Blue Stones in 1970 with low capacities soon attracted the attention of American and European advertisements. When the new gemstone word came out, Henry Platt of the Tiffany Company named the new gemstone tanzanite, and Tiffany began a marketing campaign to introduce it to the public. Currently, tanzanite is the pride of the African country of Tanzania. Of course, after word of this precious stone got out, a deadly attack quickly put an end to the mineral's exploitation. A fake car accident in which D'Souza was killed interrupted the pursuit and extraction of any reserves. As a result, during these two years, the reserves were not able to maintain the demand.

Untreated tanzanite is rare and can be prized by collectors, though it’s less commercially popular than treated stones. The majority of tanzanite on the market has been heat-treated to enhance its blue and violet hues. The treatment is stable and permanent. Heat-treated tanzanite is highly sought after due to its vibrant color and is the most commonly available type. Cat’s Eye Tanzanite is a chatoyant effect, where a single band of light can be seen moving across the surface, resembling a cat’s eye. Cat’s Eye tanzanite is valued for its unique optical phenomenon, although it is quite rare.

Bi-color tanzanite displays two distinct colors within the same stone, typically blue and violet. The colors can be seen either as zones within the crystal or as a gradient. This type can be particularly interesting to collectors and enthusiasts due to its unique and striking appearance. Tanzanite’s pleochroic nature means it can show different colors such as blue, violet, and burgundy when viewed from different angles. This is due to the way the crystal absorbs light. The color of tanzanite can appear different under various lighting conditions. Incandescent light tends to bring out the violet hues, while fluorescent light highlights the blue tones. The way a tanzanite is cut can influence its apparent color. Skilled cutters optimize the stone’s orientation to enhance its most desirable colors.