Beware. It’s Tricky Buying Gem-Quality Ruby Jewelry

There is a new process that improves the look of rubies. Average stones with cracks and flaws are being “enhanced” by being filled with lead glass. Doctored stones are worth about 80 percent less than natural stones. There are reports that antique and vintage rings have been repaired with these less valuable rubies. In addition, most rubies have been enhanced with heat in recent years to improve color or fill cracks—a practice that has found acceptance in the market. But any process…