Yellow or red soil indicates the presence of oxidized ferric iron oxides. Dark brown or black color in soil indicates that the soil has a high organic matter content. Wet soil will appear darker than dry soil. Humus, the final stage of organic matter breakdown, is black.

Red soil

a soil formed under broad-leaved forests in humid subtropical regions, chiefly on parent material fromclayey shales. It has an acid reaction and low humus content, and its yellow color is caused by the presence of ferric hydroxide.

Several earlier color order systems had placed colors into a three-dimensional color solid of one form or another, but Munsell was the first to separate hue, value, and chroma into perceptually uniform and independent dimensions, and he was the first to illustrate the colors systematically in three-dimensional space.

Chlorite. The most widespread green mineral, chlorite is rarely present by itself. In microscopic form, it gives a dull olive green color to a wide range of metamorphic rocks from slate and phyllite to schist.

The Toxic Stones:

• Actinolite: May contain asbestos.
• Adamite: Contains arsenic and some copper.
• Angelite: Converts to Gypsum when immersed in water.
• Bastnaesite: Contains toxic elements which can react in contact with water.
• Brazilianite: Contains Aluminum.

It is not dangerous, it never will be dangerous. Tiger’s eye, like the much-maligned onyx, is actually a gemstone of pure good, because of its strong affiliation with the Earth, Sun, and the elements of Air and Fire.

Astrological Reasons. Tiger Eye is a stone governed by the Sun and Mars. While you might not have an issue with wearing the stone, some folks recommend against wearing it or having it around if your zodiac sign is Taurus, Libra, Capricorn, Aquarius, or Virgo.

Examine the stone for a glass-like luster. Tiger’s eye is formed from quartz, and quartz has this type of shine. Therefore, when you’re looking at tiger’s eye, it should look somewhat like glass when you hold up to the light. You might also see a silver-toned hue in the luster when you hold it under a light.

To cleanse it, the crystal should be kept in salt water overnight as a way to recharge its energy. Once it has been taken out of the salt water it should then be washed in fresh water and placed in the sun for 2-3 hours. This process should be done every 3 months at least.

A stone of protection, Tiger’s Eye may also bring good luck to the wearer. It has the power to focus the mind, promoting mental clarity, assisting us to resolve problems objectively and unclouded by emotions. Particularly useful for healing psychosomatic illnesses, dispelling fear and anxiety.

Hard Crystals that are Safe in Water: Agate. Aventurine. Jasper. Tiger’s Eye.