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. Besides being identified as zodiac birthstone for Pisces, aquamarine is the planetary stone for Pisces, being the stone associated with Neptune, the ruling planet of Pisces. Aquamarine is the blue variety of beryl, which when green is called emerald. This Pisces birthstone, like rock crystal, is believed to give its wearer foresight and clairvoyance, as well as enhance intelligence. The Pisces gemstone is also thought to relieve anxiety, boost courage, and bring youthful happiness.