What is tourmaline?

What is tourmaline?

Tourmaline is also the gem of the eighth anniversary. Francisco Spinoza’s expedition discovers “Brazilian emerald”: the first recorded green tourmaline crystal. Tourmaline becomes electrically charged when heated. Also when squeezed: it’s piezoelectric too. Brazilian source famous for vivid blue to green tourmalines colored by copper.

What does HMT stand for on a trawler?

All Trawlers operated by RN, regardless of origin, were typically given the prefix HMT which stood for “His Majesty’s Trawler”. During 1907 Admiral Lord Charles Beresford recommended that steam trawlers be used in the role of minesweepers in the event of war.

What kind of tourmaline is pink?

This 26.32-ct. oval pink tourmaline is from Mozambique. Trade name for pink, red, purplish red, and orangy red tourmaline. It’s not unusual for pink tourmalines to have eye-visible inclusions. This beautiful tourmaline mineral specimen is from California. The specimen displays tourmaline’s characteristic columnar form.

When was the first HM Trawler Agate built?

HM Trawler Agate was built in 1934 at Smith’s Dock in Middleborough and purchased by the Royal Navy in 1935. She was modified from a trawler to be used to carry out anti-submarine work. She had been ordered by the Boston Deep Sea Fishing and Ice Company of Fleetwood, Lancashire. The trawler was originally called Mavis Rose.