Alexandrite

Alexandrite (synth.) Cut-a diamond teardrop. Changes color from green to red(day and evening, respectively),sparkles very well (literally sparks under any light source). Video in the blog post www.livemaster.ru/topic/3424238-blog-aleksandrit?vr=1&inside=1
In nature, alexandrite is extremely rare. Large crystals are almost impossible to find, and transparent stones of good quality and thick color unique. This is the rarest of gemstones, with the status of precious, and one of the most expensive.Cultivation technology of alexandrite (close to natural) complex and expensive, so the price on synthetic alexandrite is such that allows to use them as Central stones in jewelry, set with diamonds.
Of paramount importance in the evaluation of alexandrite has a color. The main advantage of alexandrite the ability to change color when you change the nature of light.
The stone is large enough-can be inserted into a pendant or make a ring.