Bloodshot Iolite. Known as the gemstone of the Vikings, Iolite was used by Norse and Viking explorers as a navigational aid, as a properly oriented stone would change color in relation to the direction of sunlight, allowing for crude navigation in the fog- enshrouded northern Atlantic waters where the direction of the sun was otherwise impossible to discern.
Chalcedony is one of the world`s oldest gemstones. According to archaeologists, humanoids have worn stones, ivory, bone, and certain organic items for personal adornment for about 75,000 years. Which shows its power. Chalcedony prevents from touchiness and melancholy. Worn by many to promote calm and peace. Chalcedony also stimulates creativity. Which is mostly used by astrologers.