In hindu astrology the blue stone is a birthstone for sagittarius.
Semi precious light blue stone.
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.
Blue lace agate as it is known is usually banded in layers of light blue bright blue stripes and threads.
Apatite is composed of calcium phosphate the same material that makes up our teeth and bones.
Sapphire is a gem variety of the mineral corundum when corundum is reddish blue to violet blue it is known simply as sapphire corundums of any other color except red which is ruby are known as fancy sapphire.
Clarity grades have much less importance in blue gemstones than in colorless stones.
Apatite is normally untreated but one.
Precious or semi precious gemstones are classified on the basis of their color translucency and hardness.
Since the color can mask inclusions it makes them less noticeable however avoid large inclusions or fractures as these can still make the stone more breakable.
Buy blue apatite gemstone.
While very few crystals are used as gems in the natural form most others are polished cut and used as jewelry.
Sodalite is a blue gemstone closely related to lapis lazuli and is in fact a component mineral thereof.
Topaz a translucent stone from very light blue to medium blue tourmaline the blue form of this stone is very rare turquoise this is a light to medium blue with green throughout zircon medium to dark translucent blue color with over 30 options you can definitely find the blue gemstone that is right for you.
For lighter toned blue gemstones a somewhat better clarity grade will improve the gem s appearance.