Star of Bharany Ruby set in a diamond ring - Renowned for its color and well-defined star - held by the Indian gem dynasty House of Bharany for years. - ct - set in gold in brilliant-cut diamond surround
G - Indian alexandrite under sunlight. Superior brilliance and excellent clarity and although the colour change is not strong, alexandrites from Andrapradesh are well known for their beautiful daylight colour.
The Wittelsbach Diamond (Der Blaue Wittelsbacher) has been compared to the clarity and color of the Hope Diamond. This one is a total of carats and has become part of the crown jewels of the Austrian and Bavarian countries.
Montana sapphires are some of the rarest of the corundum family; this unique color of blue is fairly common with Montana sapphires, although there is an entire spectrum from Red to Green to Purple. (Sapphires and aquamarine.
A variety of Chrysoberyl, alexandrite is pleochroic, which means it changes color depending on the angle at which it is viewed. Its color-changing property is due to an exceedingly rare combination of minerals that includes titanium, iron and chromium.