It is used in jewelry since ancient times. Especially prized was in ancient Egypt, Persia, Arabia, at the Mayan, Aztec, Inca. [Citation needed] The largest emerald worth of jewelery excavated in Colombia, had a mass of 7 025 ct. In this region tend to be larger specimens, unfortunately cracked, the stonemasons edinburgh http://edinburghmasonrystonemasons.co.uk/ largest he had the weight of 16 020 ct. In Brazil, crystal originated more than 10 cm in length and weighing 6 399 ct. Record-breaking stone mined in the Ural Mountains in Russia weighed 1 438 ct.An employee of one of the mines in the Urals accidentally found a huge emerald, one of the largest I've ever seen. The stone weighs exactly kilogram, is 12.5 centimeters in length and 6.5 in width. So far, it is not known how many can be worth, but it will certainly be a large amount. Precious stone was accidentally Tatiana Sorokina, which is one of the mine workers in the village of Malyshev. Emerald lying in the middle of the conveyor hundreds of kilos of ore. According to Russian law, so unique phenomenon must first assess specialists Gochrana, or state agencies dealing with precious metals and stones [1].

Probably the biggest product made from a single crystal is dark green carved vase with a height of 10 cm and a weight of 2 681 ct, which is in the Kunsthistorisches Museum in Vienna.

Currently, emeralds are also produced synthetically. From the natural inclusions they are different shapes, allowing stonemasons edinburgh you to distinguish them from natural. It shall also apply to natural stones, enhanced by soaking in oil, to hide blemishes, scratches and cracks.