Gemstone Types For hundreds of years gem stones have been mainly divided into two categories: precious and semi- precious.

The only precious gemstones aside from the dazzling diamond are the emerald, sapphire and ruby that impress with their extraordinary and pure primary colors: red, green and blue but also through their extreme rarity.

Semi precious gem stones are comprised of many gem stones all of which come in various colors but that would mainly differ from precious gemstones by their increased availability. This means it would be easier to find large well colored semi precious gems and that is why they are found in a wider and cheaper range and in jewelry pieces.

The value of gemstones is assessed based on their physical characteristics also known as the 4 Cs: color, cut, clarity and carat weight. The more pure and vivid the color of a gem is, the higher its value. Brilliance, shine and glamour are provided only by a quality cut, one that will normally come with at least a 4 figure price tag. For diamonds this is especially important as in their natural , rough form they not will be able to “disperse ” light (i.e to break light down in all the rainbow colors ) nor impress with their glamorous shine as it is only after a high quality cut that these features will be brought to light.

In terms of clarity, natural gemstones will contain “inclusions” either organic or mineral that can be found in various quantities their composition. Whereas less inclusion is preferred for a higher quality, it is nonetheless the mark for the natural origin of the gem stone as opposed to the lab created synthetic gems that would normally be worth less and contain no inclusions. The carat weight is a measure of their size. Normally larger precious gem stones are very rare to find andt that is the reason for which an increase in the carat weight of a precious gemstone will lead to an exponential increase in its price.

According to their texture, gems can also be considered opaque like the jade, turquoise or opal or transparent as the amethysts, aquamarine, amber and many others. To enhance the beauty of opaque gems the polishing process will add quality to their surface whereas the faceting process will allow shine and brilliance to the transparent ones.

Lab gems or synthetic gems are artificially created to resemble the natural ones and follow the same quality criteria: color, cut, clarity and carat weight but will be plentiful and more versatile to be included in any creative jewelry design .