Kornerupine (also known as Prismatine) was discovered in Fiskernaes, Greenland in 1884 and was named after the Danish geologist and explorer Andreas N. Kornerup (1857-1881). It is a rare gemstone well known for its pleochroism (different colors seen from different viewing angles) and its green color, which can be intense as Emerald.



Among crystal healers, Kornerupine is considered a gemstone for teaching and communication. Kornerupine is also said to help stabilize the emotional swings of manic-depressives and assist in seeing through the false agreements in one's current reality.



A metamorphic mineral, Kornerupine is a complex magnesium aluminum borosilicate whose crystals are often found in alluvial deposits collected behind rocks or in the bends of rivers. Kornerupine is often deposited with other gems including Sapphire, Chrysoberyl, Ruby, Topaz, Garnet, Zircon, Diopside, Andalusite, Spinel and Iolite.

While Kornerupine has a similar but slightly higher index of refraction to Emeralds as well as their characteristic inclusions, the two gems are easily distinguished by Kornerupine’s pleochroism. Depending on the angle which Kornerupine is viewed, its colors can range from brown, colorless, green, greenish-yellow, yellow, pink or lavender. However, wherever possible Kornerupine is faceted on the green axis as this coloration is its rarest and most coveted color.

Kornerupine also occasionally exhibits chatoyancy or the cat’s eye effect. When polished as cabochons Kornerupine can display a reflection effect that appears as a single bright band of light across its surface. This effect is caused by inclusions of fine, slender parallel fibers in the gem.

While Kornerupine is a rare gem that used to be limited to collections, it is now becoming increasingly popular in jewelry due to its suitability for everyday wear.