Apatite is composed of calcium phosphate the same material that makes up our teeth and bones.
Blue semi precious stones pictures.
Identify many types of semi precious gemstones using this handy visual pin board chart.
It has about 100 pages of basic gemstone information and about 200 pages dedicated to photos and descriptions of over 100 gems and gem materials.
Even common opal in blue hues is quite attractive.
The ancient greeks made a distinction between precious and semiprecious gems which is still used.
These are old terms and not necessarily true these days.
Buy blue apatite gemstone.
Feb 6 2012 ever wanted to know what that pretty stone is called.
List of precious and semi precious stones.
Here you will find a list of gemstones that we sell on gem rock.
In the west precious stones are diamonds sapphires rubies and emeralds.
Nevertheless these stones are soft and may be scratched when exposed in jewelry.
Gemstones of the world we highly recommend gemstones of the world by walter schumann.
All other stones are considered semi precious stones.
Although it is a very common mineral gem quality materials are extremely rare.
Even common opal in blue hues is quite attractive.
The only precious gemstones are diamond ruby sapphire and emerald.
It is imperative that you would think of sapphire when we say blue gemstones but wait.
But if you re looking for something different try a violet blue color or.
Apatite is the defining mineral for 5 on the mohs scale and it is known to occur in a wide variety of colors including a paraiba like blue green.
Guide to precious semi precious color gemstones.
To view the treatments associated with each of these stones visit our technical information on gemstones page.
Apatite is normally untreated but one.
A complete list of blue gemstones with amazing pictures.
In blue hues a precious opal s play of colors can resemble sunlight on the ocean s surface.
Gemselect s list of precious semi precious gemstones.
With over 130 gem varieties our gemstone index will help you find the perfect colored stone for your jewelry crystal healing needs.
Crystalbenefits tells you about the different hues of blue gemstones.
It is one of the most popular gemstone books ever written with over one million copies sold.
Precious stones were hard rare and valuable.
The most common blue stone is a sapphire however the deep blue color can also be found in other gemstones such as kyanite lapis lazuli and zircon.
However this is a commercial based classification and was a distinction that marketers created years ago which gives the false impression that precious stones are more valuable than semi precious stones.
All other gemstones are considered as being semi precious stones.