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Birthstone for October. 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 ...
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.
Opal is considered the birthstone for people born in October. [67] Examples. The Olympic Australis, the world's largest and most valuable gem opal, ...
Dispersion: 0.017 [1]: Ultraviolet fluorescence: Pink stones; inert to very weak red to violet in long and short wave [1]: Absorption spectra: Strong narrow band at 498 nm, and almost complete absorption of red down to 640 nm in blue and green stones; red and pink stones show lines at 458 and 451 nm, as well as a broad band in the green spectrum [1]
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.
Plus, an alternative October birthstone that increases emotional balance. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in ...
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