Gems are the rarest and most enticing material a jeweler can work with, and this newest entry in the acclaimed "500 "series showcases a rainbow of stones, from rough and natural to fully-faceted precious jewels. The pieces include rings, earrings, bracelets, necklaces, pendants, and even a tiara, and they're set in every imaginable kind of material, both precious and non-precious: gold, glass, platinum, palladium, iron, resin, silver, and more. The...