Kornerupine, also known as prismatine, is a rare mineral that typically occurs in high-pressure metamorphic rocks. This gemstone is often admired for its pleochroism, which means that it appears to have different color tones when viewed from different angles. While relatively unknown, kornerupine has a few synonyms that you may come across when shopping for gemstones. For instance, it is sometimes called Greenlandite since the first specimens were discovered in Greenland. Other alternative names for this mineral include Andersenite and Green rosaline. Despite having a reasonably limited range of synonyms, kornerupine is a beautiful and captivating gemstone that is highly valued by collectors and jewelry enthusiasts.