The Many Colors of Sapphire

If you were born in September consider yourself lucky to have a rainbow of color choices when it comes to your birthstone. Sapphires are most commonly associated with the color blue, but they are available in all colors except red, and when the stone is the color red it is …

The Largest Gold Nuggets Ever

200lb Gold Nugget Sparks Gold Fever in Australia Gold fever has struck in Australia, the Beta Hunt Mine had an amazing discovery of a huge gold deposit. Two large stones were removed from the mine, one of the stones weighing around 200 pounds and estimated to contain about 2440 ounces …

From Clocks to Pocket Watches

The invention of the mainspring in the early 15th century allowed portable clocks to be built which then eventually evolved into watches. The mainspring is a small spiral metal ribbon, and when manually wound stores energy to turn the gears and move the hands of a timepiece. Peter Henlein (also …