Brazilian Diamonds

... American group of companies in South Africa in the 1930s, and reflected the first commercialization of non gem-quality diamonds named “boart,” or “bort,” mechanically set in drill bits using South African boart (as opposed to the earlier, more expensive process of hand-set Brazilian diamonds in drill bits).

The Andes have been a mountain chain for much longer than previously thought, new research from the University of Bristol, UK suggests. The Andes were formed by tectonic activity whereby earth is uplifted as one plate (oceanic crust) subducts under another plate (continental crust). To get such a high ...

New measurements from the Gale crater contradict theories that the planet is too cold for liquid water to exist, but Mars still considered hostile to life. Hannah Devlin, science correspondent. @hannahdev. Mon 13 Apr 2015 11.42 EDT Last modified on Wed 14 Feb 2018 16.39 EST. Share on Facebook · Share on Twitter ...

Clues included in diamonds. October 7, 2010. A study of Brazilian diamonds by Earth scientists from the University of Bristol has found that tiny inclusions in the diamonds contain traces of oceanic crust and sedimentary rocks, formed originally on the surface of the .

A new pressure cell makes it possible to simulate chemical reactions deep in the Earth's crust. The cell allows researchers to perform nuclear magnetic resonance (NMR) measurements on as little as 10 microliters of liquid at pressures up to 20 kiloBar. The new device allows researchers for the first time to ...

The main component was the star of St Patrick — a broach the size of your hand, comprised of pink Brazilian diamonds, a shamrock of emeralds, and a ruby cross against a background of blue enamel. After getting HRH's knickers in a twist, the jewels were sent to Ireland, as most troublesome things were at ...

The jewels, encrusted with rubies, emeralds and Brazilian diamonds, were the regalia, or insignia, of the Order of St Patrick. The safe had been opened with a key and the theft was clearly an inside job. Last month, after 101 years, the empty safe was returned to Dublin Castle, having been kept in Kevin ...