Month stone for October.
Hardness: 6
It will provide beauty, wealth, happiness and imagination of its owner,

Opal is an amorphous material - d.v.s. has no crystal structure. It consists of silicon spheres so tiny that they can only be seen with an electron microscope. The space between the spheres is filled with water. The uniformity of the balls is crucial to the quality of the opals. Have all the balls the same diameter, the reflected light is broken so that it can provide a whole range of changing colors.Strong heating due to sunlight, spotlights, or polishing can make Opalen dry out and lose color or cracks.In jewelry, we see different types of opals: ILDOPAL is translucent, red-orange and green color shows glimpses. The ground both as a

WATEROPAL is clear and shows the color flash.

OPAL (opal through the stone) are classified by body color black, gray or white, and value set by the size of "color spots" and how many colors it can display. Stones playing in the red is the highest valued.BOULDER OPAL is an opal vein is cut together with the parent rock (matrix)MATRIX OPAL here comes the parent rock is also up to the surface.OPAL doublet is a composite (composite rock) consisting of a thin layer of opal that is glued on a slice of onyx or matrix.OPAL triplet is also a composite, but consists of three layers: clear quartz or glass are also bonded over the thin opallaget.Eromanga is one of Queensland's most famous opal towns.