Ten Gemstones Rarer than Diamonds

Ten Gemstones Rarer Than Diamond

Intense violet-blue hues of tanzanite can rival fine sapphire at a fraction of the price – and it’s a much rarer stone! Occurring only in a small area of Tanzania, this variety of zoisite has become quite prominent. After its discovery in 1967, it quickly rose in popularity, due in part to marketing efforts by Tiffany & Co. This stone shows strong pleochroism, appearing blue, violet, or green-yellow to brown, depending on the viewing angle.