This week we will continue our exploration of bead types by having a quick look at gemstones. There is no way we could cover all the possibilities when it comes to gemstones, as there are just too many, and they come in many different shapes and sizes.



Sometimes you will find that some gemstones are sold by the Karat, others by the strand and some piece by piece. There can also be quite a variation in the quality of the gemstones, and you will often see them classed as B, A, A+, AA and AAA. B grade gemstones will have more inclusions or imperfections than the other grades, and as such are lower priced. AAA grade gemstones are the best quality, but also will cost more.

Gemstones are cut in many different ways, some gemstones are more appealing when faceted, others benefit from being smooth and polished. Many gemstones also come in chip form, which is generally a lower price.  Common shapes are rounds, rondelles, coins, rice, briolettes, pears, rectangles and tubes. You can also get many gemstones as cabochons.




Not all gemstones are in their natural state. Some gemstones, such as turquoise, can be quite unstable in their natural form and as such are treated to stabilise them. Some gemstones are dyed, this can be done to give a new colour, intensify the original colour or even out the colour. Some gemstones are heat treated, which can alter the colour or clarity. Some are coated, waxed or oiled, usually to improve the appearance.

There is lots of information about gemstones available on the internet, or you could check out the great series of articles written by my fellow columnist Diana Hudson. She is working her way through the huge list of available gemstones, and every article is very informative.


Photos courtesy of deStashNotTrash and CrysallisGems
 

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Bead Types - Gemstones
22 February 2010, 12:57 pm
Source: Jennifer Mercer, Handmade News Columnist
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