As with other chemical reactions, the reaction rate and efficiency of PCR are affected by limiting factors. 1  Thus, the entire PCR process can further be divided into three stages based on reaction progress: 2  Exponential amplification: At every cycle, the amount of product is doubled (assuming 100% reaction efficiency).
Quick Answer. Aquamarine forms when magma under the Earth's crust interacts with mineral-rich rocks under mountain ranges. The magma cools as it enters fissures and crevasses of rocks called pegamites. The minerals in the pegamites heat up when they interact with the magma, forming the gemstone. Continue Reading.
Photo credit: Wikimedia. The aquamarine â also called the âpoor manâs diamondâ â is a form of the mineral beryl that also includes other gemstones such as the emerald, morganite, and heliodor. Beryl consists of four elements: beryllium, aluminum, silicon, and oxygen.