Histology slide of a solar lentigo. Liver spots (also known as age spot, solar lentigo, Lentigo senilis, Old age spot, Senile freckle) are blemishes on the skin associated with aging and exposure to ultraviolet radiation from the sun.istology slide of a solar lentigo. Liver spots (also known as age spot, solar lentigo, Lentigo senilis, Old age spot, Senile freckle) are blemishes on the skin associated with aging and exposure to ultraviolet radiation from the sun.
Tanzanite is a stone of transmutation, shifting from lilac-blue to sapphire blue and into deep blue-violet. In faceted form it is stunning, celebrated as the Gemstone of the 20th Century and first promoted by the New York jewelers, Tiffany & Co. who created magnificent pieces to showcase this stone.
Tanzanite is the blue/violet variety of the mineral zoisite (a calcium aluminium hydroxyl Sorosilicate) belonging to the epidote group.It was discovered in the Mererani Hills of Manyara Region in Northern Tanzania in 1967, near the city of Arusha and Mount Kilimanjaro.Tanzanite is used as a gemstone.anzanite is the blue/violet variety of the mineral zoisite (a calcium aluminium hydroxyl Sorosilicate) belonging to the epidote group.