The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

The novel approach could transform the jewelry industry as it demonstrates that, theoretically, we no longer need to mine to ...

Among the stones he had on his display was a 40-gram red ruby, he described as third-rate, but was in the market at a conservative price of Sh1 million ($10,000). So precious are the gemstones ...