SHOPPING: Make over your smile in as little as one week with a whopping 40% off the gentle teeth-whitening strips that can leave your pearly whites up to 10 times brighter by reducing tough stains ...

Ruby is an incredibly durable gemstone if there are no treatment-related durability concerns. - Courtesy Jan Goodman Co. Hardness and toughness Gem and mineral hardness is measured on the Mohs scale.

Ruby and sapphire are varieties of the mineral corundum. - Courtesy Hamilton Jewelers Ruby is one variety of the corundum mineral species, which also includes sapphire. Ruby is highly regarded and can ...