HMS Emerald (1795) HMS Emerald (1795) HMS Emerald was a 36-gun frigate that Sir William Rule designed in 1794 for the Royal Navy. The Admiralty ordered her construction towards the end of May 1794 and work began the following month at Northfleet dockyard. She was completed on 12 October 1795 and joined Admiral John Jervis's fleet in the Mediterranean. In 1797, "Emerald" was one of several vessels sent to hunt down and capture the crippled Santisima Trinidad, which had escaped from the British at the Battle of Cape St Vincent. "Emerald" was supposed to have been present at the Battle of the Nile
Trapiche emerald Trapiche emerald Trapiche emerald is a rare variety of the gemstone emerald, characterized by a six-pointed radial pattern of ray-like spokes of dark impurities. It is one of several types of trapiche or trapiche-like minerals, which also include trapiche ruby, sapphire, garnet, chiastolite and tourmaline. The name comes from the Spanish term "trapiche", a sugar mill, because of the resemblance of the pattern to the spokes of a grinding wheel. Trapiche emeralds were first described by Émile Bertrand in 1879. They are generally only (and rarely) found in the western part of the Eastern Cordillera basin, in the Muzo, Coscuez