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.
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.