because the color of a mineral can be the same as some other minerals but all minerals have a different property between them
Simply because colour has nothing to do with any other property of the substance in question.
yes
The color of a mineral is the least useful when identifying minerals. A mineral can exist in various colors. This is because presence of certain chemicals will change the color of the mineral. Weathering can also change the color of the mineral. Therefore color is not a good property to identify minerals.
Luster is not a good property for identifying minerals because many minerals look similar. Your best way of knowing which mineral is which is by measuring their hardness.
it is not a good idea to identify a rock or mineral by it's color because the color of the rock can change and when looking at facts on that rock/mineral it may not say the color that you have. that is why there are other ways as well as color. but don't get me wrong because some things can be identified by the color so it really depends.
Color
Hardness alone is not a good way to identify a mineral, other properties such as streak color, cleavage, opacity, ect also need to be taken into consideration. There is no "quick way" to properly identify a mineral.
you identify good eyes when you can clearly see them for instance when there near the sun you can see the real color/size. you cant identify them when there behind contacts because that is not the real eye color.
A streak plate, or unglazed white porcelain tile, is used to perform streak tests which can help to identify minerals. Rubbing the mineral on the streak plate will finely powder it and reveal the color of the powder, which in some cases is quite different from the color of the mineral. Eg: hematite is black but has a red streak - a good way to tell you have hematite instead of one of the many other shiny black minerals.
It depends
Because a lot of minerals have the same color.
A rock's color may be an indication of its mineral content. Some generalizations--A red coloration usually indicates the prescence of iron, small grayish crystals are usually quartz, greenish or bluish colorations indicate a copper content, while white may indicate a feldspar mineral or quartz.