If you are shopping for a certain special person, then you may be looking at getting them a piece of beautiful jewelry, after viewing Gem Stone reviews. If you are going to buy something with a gem, then look at all the various stones there are. They come in a big selection of colors and sizes and you want to pick one that will be a keepsake for the person and look gorgeous.To understand what exactly a gem is made of, then consider that it is an accumulation of minerals, over many hundreds of years. They have a very unique look about them not like any old mineral composite. When the item is polished and cut into a shape it is set to make a lovely necklace, ring or pair of earrings for some lucky woman.There are two different main types of gem stones and they are precious and semi-precious. Precious are more valuable and rare and will cost you more money. Think of diamonds and rubies for example, they are precious. Semi-precious includes everything besides those plus sapphires and emeralds. So there are the four main precious stones.Some of them do not look so great, when they are...