http://gemologyproject.com/wiki/index.php?title=Iolite Web19 nov. 2011 · Iolite is known as the compass of the Vikings. The Viking Sailors used very thin Iolite pieces to look at the hazy sky or overcast conditions to determine  the exact position of the Sun to set the course. Iolite was used as the world’s first Polarizing Filter. Iolite Inclusions. Natural Iolite in far sizes is rarely eye clean.

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WebIolite’s most valuable color is a beautiful, saturated violet to blue. Unless inclusions cause phenomena such as aventurescence or chatoyancy, their presence makes iolite less valuable. FIND A JEWELER Use your zip code to find a jeweler near you with GIA reports and GIA-trained staff. FIND A REPORT share in react js

Iolite Gemstone Iolite Stone – GIA

WebIolite may also have inclusions of hematite and goethite which may cause a reddish colored sheen or aventurescence. Cordierite with gem-quality blue coloration may also be known as “water sapphire.” Iolite is found in India, Canada, Sri Lanka, Myanmar, Brazil, Africa, Finland, Norway, and the USA. WebMost iolite inclusions are commonly visible, particularly in larger stones when orientation is properly positioned. Cut Iolite is cut into a variety of standard calibrated shapes, including rounds, gemstone faces, and ovals. Carat Weight Iolite is available in all size ranges for setting into a variety of jewelry styles. WebIl contient fréquemment des inclusions, sous la forme de liquide, de bulle de gaz ou d’autres minéraux, amalgamés lors de sa formation. Ces derniers sont principalement la tourmaline, l’hématoïde, la chlorite, la rutile, l’hématite, etc. Les thérapeutes utilisent de préférence le Quartz avec inclusions, amplifiant les effets des minéraux complémentaires. share inspire create