Chameleon gems

Chameleon gemstones, Dichorism, Pleochorism

The so called Chameleon Gemstones are known for their captivating ability to change color under differing lighting conditions, are a fascinating group of gems that include renowned varieties such as Alexandrite, Fluorite, Garnet, Sapphire, and Spinel. These gemstones exhibit a unique phenomenon where their colors shift and transform, much like a chameleon adapting to its environment.

In the realm of gemstones, dichroism refers to the property of exhibiting two different colors when viewed from different angles. This phenomenon is a result of the crystal structure of certain gemstones that causes light to be absorbed differently along different crystal axes, leading to the display of distinct colors and is called Dichorism, Pleochorism. It is found in all the above mentioned gems, plus in Zultanite, Tanzanite, Iolite, Demantoid and some others,

When examining a dichroic gemstone, observers may see one color when looking along one crystal axis and another color when viewing it along a different axis. This effect can add depth and complexity to the appearance of the gemstone, making it visually interesting and appealing.

Alexandrite, displays a mesmerizing color change from green or bluish-green in daylight to red or purplish-red under incandescent light.

Fluorite is showcasing varying hues under different lighting sources.

Color-change Garnets show transitioning from blue-green or teal in daylight to purple or red under incandescent light.

Spinel can exhibit color changes from blue or violet in daylight to red or pink under incandescent light.

Some color-changing Sapphires can shift from blue under daylight to purple under artificial light.

Zultanite (Csarite): This rare gemstone can change from kiwi green in daylight to raspberry pink under incandescent light.

Tanzanite typically displays blue, violet, and sometimes burgundy hues.

Iolite, also known as the "Viking's Compass" due to its ability to help the ancient Viking navigators find the sun on overcast days, typically exhibits shades of blue, violet, and sometimes grayish tones. 

Demantoid is a green variety of andradite garnet and is known for its vibrant green color, often with a unique dispersion that gives it a fiery appearance. They can exhibit a slightly yellowish-green to intense green color. 

The mesmerizing play of colors in chameleon gemstones adds to their allure and mystique, making them highly sought after by gemstone enthusiasts and collectors alike. Each gemstone in this group possesses a unique charm and beauty, with their color transformations bringing a touch of magic and intrigue to the world of gemstones.

Alexandrite

Fluorite

Garnet

Spinel

Sapphire

Zultanite

Tanzanite

Demantoid