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.
(Pictured mixed of heat treated aquamarines from Brazil and naturally blue aquamarine from Erongo, Namibia. Image courtesy of Multicolour Gems. Aquamarine is greenish-blue variety of the mineral beryl, which receives its coloring from trace amount of iron. Beryl is the mineral and family name for the well known gemstones, such as emerald and aquamarine. Lesser known varieties include goshenite (colorless), morganite (pink), heliodor (yellow) and bixbite (red). Not all blue beryls are aquamarines. The deep blue, almost sapphire like color, of blue beryl called Maxixe.