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For example, blue indicolite tourmaline is the only blue gemstone of any kind that will show a drag response when a neodymium magnet is applied. Any blue tourmaline that is diamagnetic can be identified as paraiba tourmaline colored by copper in contrast to magnetic blue tourmaline colored by iron.
In 1912, to standardize birthstones, the (American) National Association of Jewelers (now called Jewelers of America) met in Kansas and officially adopted a list. [1]: 317 The Jewelry Industry Council of America updated the list in 1952 [3]: 311 by adding Alexandrite for June, citrine for November and pink tourmaline for October. They also ...
Tourmaline is the modern birthstone for October. The gem comes in a range of colors, such as pink, red, green, blue, violet and black. This is fitting since tourmaline's name derives from the ...
Are you a ruby, diamond, or emerald? Each month has its own birthstone with a special meaning. Here's a guide to each dazzling gem from January to December.
Gemstone Meanings: What They Really Stand For Catherine Delahaye - Getty Images Jewels, birthstones, gemstones—so many names for the glitzy, glamorous stones so many of us love to wear each and ...
A gemstone (also called a fine gem, jewel, ... Even though it is a tourmaline, Paraiba Tourmaline is one of the most expensive gemstones. ... (meaning gemstone in ...
Hebrew ʾōḏem derives from the Hebrew root meaning "red". Carnelian is called sardion in Greek. Theophrastus (De lap., 55) and Pliny (Hist. nat., XXXVII, xxxi) derive sardion from the name of the city of Sardes where, they claim, it was first found. The carnelian is a siliceous stone and a species of chalcedony.
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