A tape measure comes with several markings that some may not know, like the black diamonds. Here's what those symbols mean and how you can use them.

Black diamonds are only found in two places ... in the 1840s named them for their sooty appearance. That these rare diamonds come from such a localised area adds credence to the meteor theory.

Not only is it full of features, well-made, easy-to-operate, and waterproof, it’s a shocking 40% off, which is rare for a ...

Only known to exist in Brazil and the Central African Republic, “carbonado” black diamonds date from around 2.6 to 3.8 billion years ago and are an extremely rare natural occurrence.

Farfan explained that the pure red diamond is so rare that for every 25 million diamonds found, only 1 is a fancy red. The Winston Red Diamond to be displayed is the 5th-largest fancy red diamond ...