A high quality c1930 Art Deco ring with a massive simulated Alexandrite set between white diamonds in a platinum mounting. Alexandrite was discovered in Russia in the 19th century and was prized for color-changing properties and scarcity. In the early 20th century a convincing simulant was invented by growing synthetic sapphires and lacing them with vanadium, which produces the color changing effect. This stone shifts from magenta in indoor lighting to violet in outdoor lighting.
Currently a size 5-1/4 and could be resized in the 4.5 to 7 range for $75.