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fire agate (G10001) from the National Gem Collection. Photo by Chip Clark.

Fire agate - Gem Gallery - Smithsonian Institution

geogallery.si.edu

Red beryl, the rarest gemstone on earth (worth 1000 times more than gold by weight). Photographed by Robert Weldon

Treasure Mountain Mining articles

treasuremountainmining.com

Tourmaline increases flexibility, happiness, objectivity, compassion and serenity. It also enhances tolerance and understanding. It is a stone that is very helpful for channeling. Tourmaline is also a very protecting stone. It is called the Poet's Stone. Tourmaline is often associated with the heart chakra, particularly watermelon tourmaline, where it opens one to accept love. Other colors of tourmaline are associated with the chakra of the same color.

♥ Rare Double-star Blue Sapphire. Polished as an oval cabochon with a high dome, this sapphire of classic Sri Lankan cornflower blue, possesses a very unusual form of asterism: when the stone is illuminated with a single point light source, two superimposed six-rayed stars appear. The rays of one star are almost parallel to, and just to the side of, the other.

Brazilian Amethyst Incorporating Four Styles Of Gemstone Cutting - Snowflake-cut, Concave-Cut, Negative-Cut And Bubble-Cut With Traditional Flat Faceting