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.
First found in 1967, the Tanzanite gemstone name came from its origination, Tanzania. Put out into the world market in 1969, the actual color of these loose Tanzanite gems is always a brownish color. It isn't until it is heat treated that it turns the color blue or purple.irst found in 1967, the Tanzanite gemstone name came from its origination, Tanzania. Put out into the world market in 1969, the actual color of these loose Tanzanite gems is always a brownish color. It isn't until it is heat treated that it turns the color blue or purple.