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!
Most desert species have found remarkable ways to survive by evading drought. Desert succulents, such as cacti or rock plants (Lithops) for example, survive dry spells by accumulating moisture in their fleshy tissues.ost desert species have found remarkable ways to survive by evading drought. Desert succulents, such as cacti or rock plants (Lithops) for example, survive dry spells by accumulating moisture in their fleshy tissues.
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.