Indian researchers found that subjecting rubies to industrial microwave heat improved their color, clarity, and luster by eliminating impurities and irregularities in their molecular structure. Microwave heating is faster, cheaper, and more environmentally friendly than other heating methods. NASA uses microwave signals to communicate with spacecraft. The microwave was invented by Percy Spencer, who accidentally […]
Rubies are red corundum gemstones, with the most desirable being deep red. They are found in Myanmar, Africa, and Asia, and are the second hardest gemstone after diamonds. Rubies are associated with love and are used in jewelry. The largest ruby in the world is privately owned and has asterisms. Prices for rubies vary based […]
Rubies and sapphires are varieties of corundum, a common mineral that can be transparent and used as a gemstone. Synthetic production of corundum began in 1837, with the Verneuil process introduced in 1903 for mass production of flawless rubies and sapphires. The process involves melting highly purified alumina powder using a blowtorch and accumulating droplets […]
