Emeralds are a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the 10 point Mohs scale of mineral hardness Emerald is regarded as the traditional birthstone for May, as well as the traditional gemstone for the astrological signs of Taurus, [...]

More By NevaeH Jewelry

The ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires. Rubies have a hardness of 9.0 on the Mohs [...]

More By NevaeH Jewelry

ET Gems: Black Diamonds Come From Outer Space By Jeanna Bryner, LiveScience Staff Writer If you’re looking for a space-age way to propose marriage, a black-diamond ring might be the way to go. Long baffled by their origin, scientists now have evidence that these charcoal-colored gems formed in outer space. Stephen Haggerty and Jozsef Garai, [...]

More By NevaeH Jewelry