Ruby is a pinkish-red to blood-red colored gemstone, that belongs to the corundum family, the same gemstone family as sapphires. The name ruby comes from the Latin word, ruber whic...
Tourmaline is a mineral gemstone available in almost any color you could imagine. More importantly, tourmaline is one of the rare minerals whose crystals could be bi-colored or eve...
The mineral spinel occurs in several colors, like black, blue, green, orange, and of course, red, which was often confused with ruby. It was back in 1783, that spinel was first ide...
Coral is one of the most important gemstones that ιis not a mineral but a product of the sea. Corals are marine organisms that excrete calcium carbonate, forming a hard skeleton...
Aquamarine is one of the most sought-after blue or teal-colored gemstones. The name of the stone is due to its color, as Aqua Marina in Latin means seawater. It belongs ...
Rose Quartz is the pink variety of the widely used mineral Quartz. Favorite gems of the same family are Amethyst, Agate, Citrine, Onyx, Jasper and many others. Quartz also appe...
Citrine is a variety of the quartz family and is found in various shades of yellow and orange with red tones. Gems of the quartz family with very pale yellow color are commonly cal...
Agate is a variety of chalcedony, formed by irregular, successive layers of mineral. On Mohs scale agate is in the 6.5-7 classification, that is, one of the toughest materials and ...
