It's a member of the quartz family. It is a fairly hard stone at 7 on the Mohs hardness scale.
Amethyst is the traditional birthstone for February. It is believed to have the power to protect the owner from the intoxicating  effects of wine and romance, and from the evil thoughts of enemies.

Agate can be found in many different colors and types.  It is a hard stone, usually opaque, but can contain translucent bands of color. Many agates have enhanced or dyed colors. Agates are microcrystalline quartz.. Generally, agates are found in two different types. Solid color stones are the ones that are commonly dyed or heat treated; these include blue and green agates, and also the very popular carnelian and black onyx varieties. Most of the banded types are naturally colored, such as blue lace, Botswana, and crazy lace. Many specimens of petrified wood are agatized. Over millions of years, the molecules of wood have been replaced by agate which was present in the immediate environment.  This can result in beautiful banded patterns that correspond to the rings in the original tree parts.Agates have been traditionally believed to possess healing and supportive qualities.  They also have been believed to enhance intuitiveness and insight.

Aventurine is a member of the quartz mineral family. It is usually a green color, but can also be yellow, brown or gray. It contains very small color or hematite inclusions which appear as gray or black dots.  As with other quartz minerals, it's a 7 on the Mohs hardness scale. Aventurine is believed by many to be a "lucky" stone which will bring the owner money. It has traditionally been believed to cure blindness and enhance vision.

Coral is a natural organic gemstone .It is actually composed of the calcium rich skeletons of microscopic sea animals that live in "colonies".  Over time, they build up layer after layer to form large pieces which can be cut or carved and then polished to a high luster. Coral ranges from a 2 1/2 - 4 on the Mohs hardness scale, so

Hematite is a shiny, metallic gray colored opaque stone widely used in jewelry.  Hematite is a form of iron ore.Most of the hematite available today is man made. People have traditionally believed that hematite has power over many traits and personal characteristics such as trust, confidence in self as well as others, reliability, mental focus, and stability. 

a translucent to transparent,iridescent gemstone that is very popular for jewelry.  Labradorite is a form of feldspar. It is named for Labrador, the place where it was first discovered.It generally a silver gray colored gemstone that displays bright flashes of color which can be blue, green, yellow and orange. It also is similar in appearance to moonstone, displaying the same type of "moving moon" effect. People have traditionally believed that  labradorite has influence over many traits and  personal characteristics such as self development and inner strength. 

It's a member of the quartz family.It is a fairly hard stone at 7 on the Mohs hardness scale,and is non porous. Most rose quartzis permanently dyed to give it an even color.Rose Quartz is believed by anyto enhance love, compassion, nurturing and all matters of the heart.

Tiger eye is a quartz mineral.It is an opaque stoneIt is usually a golden brown color,but a blue variety called hawks eye is also very popular.Tiger eye is best known for the strong chatoyant effect it displays when properly cut. This is caused by the inclusion of asbestos fibers caught in the forming quartz mineral. These fibers deteriorate, and are either replaced by iron oxide,which give it the familiar golden brown color,or in some cases the original blue colorof the asbestos is left as a residual material,forming the more rare hawks eye. These fibers occur in parallel growth patterns, and when the stone is cut along these lines, they form the familiar effect seen in these gems. Many people believe that these stones possess strong spiritual properties.Tigers eye is believed to enhance clear thought, willpower and inner strength.Hawks eye is a favorite for those who believe it gives them strength todeal with the difficulties of everyday life.

There are many famous mines that produce turquoisein the area, such as the Kingman and Morenci mines,and the most well known, the Sleeping Beauty mine. Very fine material is now being mined in China (Hubei). Turquoise is a phosphate mineral, and it gets it's vivid blue color from copper.This stone can also contain iron,which occurs as a familiar black matrixin many stones, or if it is well integrated,can give turquoise a green color. Turquoise is very commonly treated in several different ways -mostly to seal it so it is protected from moisture and exposure to air.Most lesser quality "chalk-like"material is treated this way - it is coated with a plastic polymer after it is dyed to give it a good blue color.This is called "stabilized" turquoise and is less valuable than natural turquoise.
Another variety is "colorshot" - powdered white turquoise is "reconstituted" by mixing it with a colored adhesive,and it is pressed into blocks which are then cut into cabochons or beads.
The best material is a natural blue, which is cut and polished with a natural wax coating to seal it. Many people believe that turquoise has strong influence on clear, positive thought and many social attributes -friendship, trust, sincerity, strength and emotional balance. Turquoise is a very soft and porous stone, and will be stainedif it absorbs a colored liquid.