On the market more common red ruby red spinel, garnet, tourmaline, such as varieties, appearance and natural ruby very similar: Red spinel: spinel is red or pink color one, good diaphaneity and turn the spinel, observations from different d...

With the coronavirus pandemic forcing millions of employees, suppliers and customers to work online, business transactions and endpoints are growing exponentially. Due to the sudden increase of work from home, the current global crisis has...