Ametrine is formed when tiny iron particles locked inside the matrix of the quartz crystals begin to oxidize at different rates. This is usually due to differences in temperature between the two different parts of the stones. As you can imagine, this is a very unique and unusual situation to occur in the natural world!
Xerophytes are plants that have adapted to live in the dry, hot conditions of the desert. These plants have a waxy outer coating to help the plant retain moisture, along with other adaption of their seeds, roots and leaves to help them thrive and retain moisture for extended periods until water is available.erophytes are plants that have adapted to live in the dry, hot conditions of the desert. These plants have a waxy outer coating to help the plant retain moisture, along with other adaption of their seeds, roots and leaves to help them thrive and retain moisture for extended periods until water is available.
The soil in subtropical deserts is usually either sandy or coarse and rocky. Plants and animals in subtropical deserts must be able to withstand the hot temperatures and lack of moisture. Shrubs and small trees in the subtropical desert usually have leaves adapted to retain moisture. Animals in subtropical deserts are usually active at night, when it is cooler.