Diamonds Business

A gemstone or gem (also called a fine gem, jewel, or a precious or semi-precious stone) is a piece of mineralcrystal, which, in cut and polished form, is used to make jewelry or other adornments.However, certain rocks  or organic materials that are not minerals  are also used for jewelry, and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other physical properties that have aesthetic value. Rarity is another characteristic that lends value to a gemstone. Apart from jewelry, from earliest antiquity engraved gems and hardstone carvings, such as cups, were major luxury art forms.