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!
Desert Marigold. The desert marigolds belong to the aster family and are commonly found in the south western parts of the US and in Mexico. They are annual and short lived perennial plants which grow between 10 and 30 inches and have very hairy leaves.. The desert marigolds belong to the aster family and are commonly found in the south western parts of the US and in Mexico. They are annual and short lived perennial plants which grow between 10 and 30 inches and have very hairy leaves.
Animals of the Desert Biome. Some of the animals that inhabit the desert biome include: 1  Desert kangaroo rat (Dipodomys deserti) - The desert kangaroo rat is a species of kangaroo rat that inhabits the deserts of southwestern North America including the Sonoran Desert, Mojave Desert, and Great Basin Desert.