1.40 Carat Natural Tanzanite 6.7 mm Round Faceted Gemstone Loose

Gorgeous round-faceted natural Tanzanite mined in Tanzania, approximately 1.40 Carats and 6.74 x 6.71 x 4.41 mm. This beautiful violetish-slightly greenish-blue gemstone has a medium-light tone and slightly grey saturation, with medium-strong color zoning, and is eye-clean. Although not an inclusion, there is a crescent-shaped natural cavity in one of the back facets that can show through the table at a specific viewing angle. New and ships in a gem jar.

Tanzanite, a rare and captivating gemstone, is a unique variety of Zoisite with trace Vanadium content, first discovered near Mt. Kilimanjaro in 1967. Known for its remarkable trichroism, it displays vibrant blue, violet, or burgundy hues depending on the viewing angle and lighting. Fine Tanzanite's color can shift from a rich blue in daylight to a striking purple indoors. The stones’ unique color play, combined with their limited source - Merelani Hills of Tanzania - makes it highly prized. With a hardness of 6.5 to 7 on the Mohs scale, it requires gentle care. Tanzanite's intense color and rarity have quickly elevated it to a sought-after gem in the world of fine jewelry. At least 90% of mined Tanzanite is estimated to be heat-treated to enhance its color, widely accepted as a standard practice, and rarely, stones can achieve stunning color through natural heating.