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.
Plants that live in the deserts and plants that live in the Tundra  have commonalities and differences. One commonality is that they  have both learned to adapt to very hars â¦ h climates. One difference  is that Tundra plants are adapted to extreme cold, while desert  plants are adapted to extreme heat. 1 person found this useful.