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.
Aquamarine. Aquamarine, the birthstone for the month of March, acquired its name from its light blue color. This hard type of a mineral called beryl has a color that resembles seawater and is common in many types of jewelry.anzanite and Turquoise. Tanzanite, discovered in the African nation of Tanzania in the 1960s, is a violet-blue gem. Turquoise is a common blue stone that ranges from opaque to translucent. Both turquoise and tanzanite are December birthstones.