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: Plants Short grasses, sagebrush, creosote bushes, and cacti are just a few of the plants that can be found in the desert. Plant abundance and variety are determined by the geographic location of the desert.esert: Plants Short grasses, sagebrush, creosote bushes, and cacti are just a few of the plants that can be found in the desert. Plant abundance and variety are determined by the geographic location of the desert.
Further information: List of flora of the Mojave Desert and Flora of the Sierra Nevada alpine zone. Native wildflower blazing star (Mentzelia lindleyi) Gentiana algida in Sierra Nevada. California native plants are plants that existed in California prior to the arrival of European explorers and colonists in the late 18th century.